CN206481127U - A kind of brushless DC motor rotor component - Google Patents
A kind of brushless DC motor rotor component Download PDFInfo
- Publication number
- CN206481127U CN206481127U CN201720084252.6U CN201720084252U CN206481127U CN 206481127 U CN206481127 U CN 206481127U CN 201720084252 U CN201720084252 U CN 201720084252U CN 206481127 U CN206481127 U CN 206481127U
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- rotor
- rotating shaft
- motor
- brushless
- rotor component
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model provides a kind of brushless DC motor rotor component, including rotating shaft and the PM rotor that is set in the rotating shaft, wherein, the material of the PM rotor is ferrite, the PM rotor and the rotating shaft integrated injection molding；The rear end cap of brshless DC motor is extended in the rotating shaft, and signal magnet ring is housed in the spindle portion for stretching out rear end cap.PM rotor and rotating shaft integrated injection molding in the utility model, it not only simplify the assembling of motor, also improve product concentricity, solve multistage skewed slot magnetize difficulty technical barrier, magnetizing for permanent magnet is set to be magnetized for skewed slot, the uniformity that magnetizes is good, and cogging torque shake and higher hamonic wave vibration, greatly reduce the vibration of motor when eliminating rotor operating；And high-frequency electromagnetic noise is eliminated, run more reliable vibration small.
Description
Technical field
The utility model is related to brshless DC motor, more particularly to a kind of brushless DC motor rotor component.
Background technology
Brshless DC motor, has very big similarity with brush motor in structure, also has rotor and stator, only
It is opposite with the structure of brush motor；The rotor of brush motor is coil windings, is connected with power output shaft, and stator is permanent-magnet magnetic
Steel, and the rotor of brshless DC motor is permanent magnetic steel, is connected together with shell with output shaft, stator is winding coil, is gone
Fall brush motor and be used for the commutating brush of checker electromagnetic field, but started by driver, stopped, being braked,
Therefore for referred to as brshless DC motor, the brush motor that compares, brshless DC motor have brushless, low interference, noise it is low,
Internal resistance is small, service life is long, the low advantageous feature of maintenance cost.With permanent-magnet material process technology and motor manufacturing level and its
The development of control technology, the performance of permanent-magnet brushless DC electric machine is continuously available raising, has been widely used in Aero-Space, machine
The fields such as people, household electrical appliance, Medical Devices and factory automation.In face of the growing side of the middle and small motor market demand one
Face, brshless DC motor has wide development space and opportunity.However, the brshless DC motor of traditional structure, because it is made
Valency is high, and complex manufacturing causes performance not to be protected, and noise control exists as the main advantage of brshless DC motor
It can not be controlled in production, energy consumption can not be preferably minimized limit.
Although having oblique slot type stator core or oblique slot type magnet in the market, oblique slot type stator is during punching
Folded riveting and when around copper cash it is highly difficult, operating efficiency is very low, and fraction defective is very high, and skewed slot magnetic shoe in processing and assembling all very
It is difficult.Furthermore, due to there is magnet segmentation or magnet multi-sheet structure, it can not also be fully solved and cut frequency sound and birdie problem, so,
Oblique slot type structure is difficult to carry out bulk production in the market, it is difficult to solve the technological difficulties that above-mentioned motor is perplexed.
Utility model content
In order to solve above-mentioned the deficiencies in the prior art, the utility model provides a kind of brushless DC motor rotor component.
Technical problem to be solved in the utility model is achieved by the following technical programs：
A kind of brushless DC motor rotor component, including rotating shaft and the PM rotor that is set in the rotating shaft, wherein,
The material of the PM rotor is ferrite, the PM rotor and the rotating shaft integrated injection molding；The rotating shaft is prolonged
The rear end cap of brshless DC motor is stretched out, and signal magnet ring is housed in the spindle portion for stretching out rear end cap.
Further, the N poles of each permanent magnet and S are extremely spaced on the PM rotor, and to same direction
Tilt.
Further, the angle of bevel of the PM rotor is 4 °.
Further, the rotating shaft connects in injection and forms knurled portions, the rolling on the axial plane of the PM rotor
Flower is formed with annular groove on the inside of portion.
Further, the knurled portions are straight knurling.
Further, the rotating shaft is connected with the inertial flywheel and pulley drive of brshless DC motor respectively.
Further, the drive connection is singly-bound connection or spline connection.
The utility model has the advantages that：
（1）PM rotor and rotating shaft integrated injection molding in the utility model, not only simplify motor
Assembling, also make product concentricity improve, solve multistage skewed slot magnetize difficulty technical barrier, make filling for permanent magnet
Magnetic magnetizes for skewed slot, and the uniformity that magnetizes is good, cogging torque shake and higher hamonic wave vibration when eliminating rotor operating, significantly
Reduce the vibration of motor；And high-frequency electromagnetic noise is eliminated, run more reliable vibration small；Meanwhile, rotor assembly is eliminated
Rotor core, greatlys save metal material.
（2）PM rotor uses ferrite, and rare earth material has been saved again, also make up rare earth material it is in short supply,
Other problems caused by price fluctuation is big.
（3）Signal magnet ring is housed in the spindle portion for stretching out rear end cap, by increasing signal magnet ring, it is ensured that suddenly
Your output is stable.
（4）It is low using the brushless DC motor noise decibel of the utility model rotor assembly, it is pollution-free, use
Scope is very wide, particularly requires environmental noise the low facility of decibel.
Brief description of the drawings
Fig. 1 is the overall stereogram of the utility model；
Fig. 2 is the stereogram of the utility model rotating shaft.
In figure, 1, rotating shaft, 2, PM rotor, 3, signal magnet ring, 4, knurled portions, 5, annular groove, 6, ball bearing.
Embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
A kind of brushless DC motor rotor component, including rotating shaft 1 and the PM rotor 2 being set in the rotating shaft 1, its
In, the material of the PM rotor 2 is ferrite, the PM rotor 2 and the integrated injection molding of rotating shaft 1；It is described
The rear end cap of brshless DC motor is extended in rotating shaft 1, and signal magnet ring 3 is housed in the part of rotating shaft 1 for stretching out rear end cap, by increasing
Plus signal magnet ring 3, it is ensured that Hall output is stable.
The N poles of each permanent magnet and S are extremely spaced on the PM rotor 2, and are tilted to same direction；For drop
Low electromagnetism and mechanicalness noise, by lot of experiments, when being that rotor assembly is magnetized, the angle of bevel of PM rotor 2 is 4 °,
Electromagnetism and mechanicalness noise can effectively be reduced.The utility model is solved using PM rotor 2 and the integrated injection molding of rotating shaft 1
Multistage skewed slot magnetize difficulty technical barrier, magnetizing for permanent magnet is magnetized for skewed slot, eliminate rotor operating when cogging torque
Shake and higher hamonic wave vibration, greatly reduce the vibration of motor；And eliminate high-frequency electromagnetic noise of knowing clearly.
The rotating shaft 1 connects in injection and forms knurled portions 4 on the axial plane of the PM rotor 2, the knurled portions 4
Inner side is formed with annular groove 5；The knurled portions 4 are straight knurling.
The rotor assembly does not contain rotor core, greatlys save metal material.
The rotating shaft 1 is connected with the inertial flywheel and pulley drive of brshless DC motor respectively, and the drive connection is excellent
Select but be not limited to singly-bound connection or spline connection.
The two ends of rotating shaft 1 are arranged on drive end bearing bracket and rear end cap by bearing, and the bearing is ball bearing 6.
Embodiment described above only expresses embodiment of the present utility model, and it describes more specific and detailed, but simultaneously
Therefore the limitation to the utility model the scope of the claims can not be interpreted as, as long as using equivalent substitution or the form of equivalent transformation institute
The technical scheme of acquisition, all should fall within protection domain of the present utility model.
Claims (7)
1. a kind of brushless DC motor rotor component, it is characterised in that：Including rotating shaft and the permanent magnet being set in the rotating shaft
Rotor, wherein, the material of the PM rotor is ferrite, the PM rotor and the rotating shaft integrated injection molding；
The rear end cap of brshless DC motor is extended in the rotating shaft, and signal magnet ring is housed in the spindle portion for stretching out rear end cap.
2. brushless DC motor rotor component as claimed in claim 1, it is characterised in that：Each is forever on the PM rotor
The N poles of magnet and S are extremely spaced, and are tilted to same direction.
3. brushless DC motor rotor component as claimed in claim 2, it is characterised in that：The skewed slot angle of the PM rotor
Spend for 4 °.
4. brushless DC motor rotor component as claimed in claim 1, it is characterised in that：The rotating shaft is described in injection connection
Formed on the axial plane of PM rotor and be formed with annular groove on the inside of knurled portions, the knurled portions.
5. brushless DC motor rotor component as claimed in claim 4, it is characterised in that：The knurled portions are straight knurling.
6. brushless DC motor rotor component as claimed in claim 1, it is characterised in that：The rotating shaft respectively with brushless direct-current
Inertial flywheel and the pulley drive connection of motor.
7. brushless DC motor rotor component as claimed in claim 6, it is characterised in that：The drive connection is singly-bound connection
Or spline connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720084252.6U CN206481127U (en) | 2017-01-23 | 2017-01-23 | A kind of brushless DC motor rotor component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720084252.6U CN206481127U (en) | 2017-01-23 | 2017-01-23 | A kind of brushless DC motor rotor component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206481127U true CN206481127U (en) | 2017-09-08 |
Family
ID=59754453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720084252.6U Active CN206481127U (en) | 2017-01-23 | 2017-01-23 | A kind of brushless DC motor rotor component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206481127U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681842A (en) * | 2017-11-21 | 2018-02-09 | 默拓（苏州）机电科技有限公司 | A kind of brushed DC motor |
-
2017
- 2017-01-23 CN CN201720084252.6U patent/CN206481127U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681842A (en) * | 2017-11-21 | 2018-02-09 | 默拓（苏州）机电科技有限公司 | A kind of brushed DC motor |
| CN107681842B (en) * | 2017-11-21 | 2023-12-08 | 默拓（苏州）机电科技有限公司 | Brush DC motor |
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