CN219938049U - Three-phase ultra-thin DC brushless motor - Google Patents
Three-phase ultra-thin DC brushless motor Download PDFInfo
- Publication number
- CN219938049U CN219938049U CN202321061181.XU CN202321061181U CN219938049U CN 219938049 U CN219938049 U CN 219938049U CN 202321061181 U CN202321061181 U CN 202321061181U CN 219938049 U CN219938049 U CN 219938049U
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- China
- Prior art keywords
- magnetic steel
- positioning seat
- rolling bearing
- stator core
- outer rotor
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 58
- 239000010959 steel Substances 0.000 claims abstract description 58
- 238000005096 rolling process Methods 0.000 claims abstract description 26
- 238000009434 installation Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000003792 electrolyte Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 2
- 239000010962 carbon steel Substances 0.000 claims description 2
- 239000000243 solution Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002001 electrolyte material Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
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- Motor Or Generator Frames (AREA)
Abstract
The utility model discloses a three-phase ultrathin direct current brushless motor, which comprises an outer rotor shell, a magnetic steel positioning seat, magnetic steel, a coil and a stator core, wherein the outer rotor shell, the magnetic steel positioning seat, the magnetic steel, the coil and the stator core are coaxially arranged from outside to inside; the mounting end of the motor shaft is assembled on the motor bracket through a rolling bearing, and a circuit board is arranged between the outer rotor shell and the motor bracket. Through setting up the magnet steel positioning seat, install the magnet steel on the magnet steel positioning seat again with the outer rotor casing assembly to guarantee the mounted position and the outer rotor balancing volume of magnet steel, make the motor operation more steady reliably under the high speed.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a three-phase ultrathin direct current brushless motor.
Background
With the improvement of the living standard of people and the development of modern production and office automation, equipment such as household appliances, industrial robots and the like tend to be high-efficiency, miniaturized and high-intelligent, and as an important component of an execution element, a motor must have the characteristics of high precision, high speed, high efficiency and the like, and the application of a direct current brushless motor is also rapidly increased.
A three-phase brushless dc motor is a motor having three-phase windings, a brushless motor, and a commutator (or slip ring), and is driven by dc power through an inverter circuit. The magnetic steel on the three-phase direct current brushless motor structure in the prior art is mainly arranged on the outer rotor shell in a sticking way, and the arrangement mode ensures that the rotation stability of the motor is poor and the balance quantity of the rotor is influenced under the use condition of high rotation speed and high torque of the motor. Based on this, it is necessary to provide a new three-phase dc brushless motor.
Disclosure of Invention
The utility model aims to provide a three-phase ultrathin direct current brushless motor so as to solve the problems in the prior art, ensure the installation position of magnetic steel and the balance of an outer rotor and ensure that the motor runs more stably and reliably at a high speed.
In order to achieve the above object, the present utility model provides the following solutions: the utility model provides a three-phase ultrathin direct current brushless motor, which comprises an outer rotor shell, a magnetic steel positioning seat, magnetic steel, a coil and a stator core, wherein the outer rotor shell, the magnetic steel positioning seat, the magnetic steel, the coil and the stator core are coaxially arranged from outside to inside; the installation end of the motor shaft is assembled on the motor bracket through a rolling bearing, and a circuit board is arranged between the outer rotor shell and the motor bracket.
Preferably, the magnetic steel positioning seat comprises a positioning seat base body and mounting division bars, a plurality of the mounting division bars are uniformly distributed on the positioning seat base body, and each pole of magnetic steel is respectively inserted between two adjacent mounting division bars.
Preferably, the magnetic steel adopts 8 poles, 10 poles or 14 poles.
Preferably, the outer rotor shell is made of electrolyte plates, and the motor shaft is made of carbon steel.
Preferably, the magnetic steel positioning seat is made of nylon and glass fiber materials, the stator core is made of silicon steel sheets, and the surface of the stator core is coated with epoxy resin powder.
Preferably, the circuit board is electrically connected with a coil, and the coil is provided with a three-phase winding output.
Preferably, the rolling bearing includes an inner rolling bearing located inside the motor bracket and disposed near the stator core, and an outer rolling bearing located outside the motor bracket.
Preferably, a graphite gasket is arranged between the inner rolling bearing and the motor shaft, and an axial check ring and a rubber pad are arranged on the outer side of the outer rolling bearing.
Compared with the prior art, the utility model has the following beneficial technical effects:
the three-phase ultrathin direct current brushless motor comprises an outer rotor shell, a magnetic steel positioning seat, magnetic steel, a coil and a stator core, wherein the outer rotor shell, the magnetic steel positioning seat, the magnetic steel, the coil and the stator core are coaxially arranged from outside to inside; the mounting end of the motor shaft is assembled on the motor bracket through a rolling bearing, and a circuit board is arranged between the outer rotor shell and the motor bracket. Through setting up the magnet steel positioning seat, install the magnet steel on the magnet steel positioning seat again with the outer rotor casing assembly to guarantee the mounted position and the outer rotor balancing volume of magnet steel, make the motor operation more steady reliably under the high speed.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exploded view of a three-phase ultra-thin DC brushless motor in an embodiment of the utility model;
FIG. 2 is an isometric view of a three-phase ultra-thin DC brushless motor;
FIG. 3 is a schematic diagram of the overall structure of a three-phase ultra-thin DC brushless motor;
wherein, 1 a rubber pad; 2 an axial retainer ring; 3, an outer rolling bearing; 4, a motor bracket; 5 inner rolling bearings; 6, a graphite gasket; 7, a circuit board; 8 stator iron cores; 9 coils; 10 magnetic steel; 11 magnetic steel positioning seats; 12 outer rotor shell; 13 motor shaft.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model aims to provide a three-phase ultrathin direct current brushless motor so as to solve the problems in the prior art, ensure the installation position of magnetic steel and the balance of an outer rotor and ensure that the motor runs more stably and reliably at a high speed.
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1-3, the utility model provides a three-phase ultrathin direct current brushless motor, which comprises an outer rotor shell 12, a magnetic steel positioning seat 11, magnetic steel 10, a coil 9 and a stator core 8, wherein the outer rotor shell 12, the magnetic steel positioning seat 11, the magnetic steel 10, the coil 9 and the stator core 8 are coaxially arranged from outside to inside, the stator core 8 is arranged on a motor shaft 13, the coil 9 is arranged on the outer ring of the stator core 8, the magnetic steel positioning seat 11 is arranged on the inner ring of the outer rotor shell 12, the magnetic steel 10 is uniformly assembled on the magnetic steel positioning seat 11 in the circumferential direction, and the magnetic steel 10 and the coil 9 are correspondingly arranged; the mounting end of the motor shaft 13 is assembled on the motor bracket 4 through a rolling bearing, and a circuit board 7 is arranged between the outer rotor shell 12 and the motor bracket 4.
In one embodiment, in order to ensure the installation position of the magnetic steel and the balance of the outer rotor, the magnetic steel positioning seat 11 in this embodiment includes a positioning seat base body and installation division bars, the installation division bars are uniformly distributed on the positioning seat base body, each pole of magnetic steel 10 is respectively inserted between two adjacent installation division bars, and the magnetic steel positioning seat 11 performs axial and indexing positioning on each pole of magnetic steel, so that the motor operates more stably and reliably at a high speed.
In one embodiment, the magnetic steel 10 is made of neodymium iron boron, and the magnetic steel 10 adopts 8 poles, 10 poles or 14 poles.
In one embodiment, the outer rotor casing 12 is made of electrolyte, the motor shaft 13 is made of 70# steel, the coil 9 is an enameled wire, the circuit board 7 is an epoxy resin board, the motor support 4 is made of an aluminum alloy material, and the motor support 4 is molded into a circular ring shape after being in an injection molding strip shape.
In one embodiment, the magnetic steel positioning seat 11 is made of nylon and glass fiber materials, the stator core 8 is made of silicon steel sheets, the surface of the stator core 8 is insulated by epoxy resin powder coating, the stator core 8 is made of silicon steel sheets, so that the motor can achieve ultrathin characteristics, and the total height of the motor is about 16 cm.
In one embodiment, the circuit board 7 is electrically connected to the coil 9, and the coil 9 is provided with a three-phase winding output.
In one embodiment, the rolling bearing made of the electrolyte material comprises an inner rolling bearing 5 and an outer rolling bearing 3, the inner rolling bearing 5 is located on the inner side of the motor support 4 and is close to the stator core 8, the outer rolling bearing 3 is located on the outer side of the motor support 4, a graphite gasket 6 made of PET material is arranged between the inner rolling bearing 5 and the motor shaft 13, an axial check ring 2 made of 65Mn and a rubber pad 1 made of silica gel material are installed on the outer side of the outer rolling bearing 3, and the axial check ring 2 is used for axially positioning the rotor.
It should be noted that it will be apparent to those skilled in the art that the present utility model is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
The principles and embodiments of the present utility model have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present utility model; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.
Claims (8)
1. The utility model provides a three-phase ultra-thin type direct current brushless motor which characterized in that: the motor comprises an outer rotor shell, a magnetic steel positioning seat, magnetic steel, a coil and a stator core, wherein the outer rotor shell, the magnetic steel positioning seat, the magnetic steel, the coil and the stator core are coaxially arranged from outside to inside, the stator core is arranged on a motor shaft, the coil is arranged on the outer ring of the stator core, the magnetic steel positioning seat is arranged on the inner ring of the outer rotor shell, the magnetic steel is circumferentially and uniformly assembled on the magnetic steel positioning seat, and the magnetic steel and the coil are correspondingly arranged; the installation end of the motor shaft is assembled on the motor bracket through a rolling bearing, and a circuit board is arranged between the outer rotor shell and the motor bracket.
2. A three-phase ultra-thin dc brushless motor according to claim 1, wherein: the magnetic steel positioning seat comprises a positioning seat base body and mounting division bars, a plurality of the mounting division bars are uniformly distributed on the positioning seat base body, and each pole of magnetic steel is respectively inserted between two adjacent mounting division bars.
3. A three-phase ultra-thin dc brushless motor according to claim 1, wherein: the magnetic steel adopts 8 poles or 10 poles or 14 poles.
4. A three-phase ultra-thin dc brushless motor according to claim 1, wherein: the outer rotor shell is made of electrolyte plates, and the motor shaft is made of carbon steel.
5. A three-phase ultra-thin dc brushless motor according to claim 1, wherein: the magnetic steel positioning seat is made of nylon and glass fiber materials, the stator core is made of silicon steel sheets, and the surface of the stator core is coated with epoxy resin powder.
6. A three-phase ultra-thin dc brushless motor according to claim 1, wherein: the circuit board is electrically connected with the coil, and the coil is provided with three-phase winding output.
7. A three-phase ultra-thin dc brushless motor according to claim 1, wherein: the rolling bearing comprises an inner rolling bearing and an outer rolling bearing, the inner rolling bearing is located at the inner side of the motor support and is close to the stator core, and the outer rolling bearing is located at the outer side of the motor support.
8. The three-phase ultra-thin dc brushless motor according to claim 7, wherein: and a graphite gasket is arranged between the inner rolling bearing and the motor shaft, and an axial check ring and a rubber pad are arranged on the outer side of the outer rolling bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321061181.XU CN219938049U (en) | 2023-05-06 | 2023-05-06 | Three-phase ultra-thin DC brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321061181.XU CN219938049U (en) | 2023-05-06 | 2023-05-06 | Three-phase ultra-thin DC brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219938049U true CN219938049U (en) | 2023-10-31 |
Family
ID=88486482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321061181.XU Active CN219938049U (en) | 2023-05-06 | 2023-05-06 | Three-phase ultra-thin DC brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219938049U (en) |
-
2023
- 2023-05-06 CN CN202321061181.XU patent/CN219938049U/en active Active
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