CN109672284A - Using the micromotor of an array ring - Google Patents
Using the micromotor of an array ring Download PDFInfo
- Publication number
- CN109672284A CN109672284A CN201710953284.XA CN201710953284A CN109672284A CN 109672284 A CN109672284 A CN 109672284A CN 201710953284 A CN201710953284 A CN 201710953284A CN 109672284 A CN109672284 A CN 109672284A
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- China
- Prior art keywords
- ring
- rotor
- stator
- micromotor
- array
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a micromotor, including a stator, the stator has a rotor accommodating chamber, wherein the stator has multiple rolls, forms a stator slot between the roll；An and rotor, the rotor is rotatably disposed in the rotor accommodating chamber, wherein rotor described in the stator surrounding, wherein the rotor includes a change and a shaft, wherein the shaft and the change are to be permanently connected, wherein the shaft extends outwardly to form a drive shaft, wherein the change includes a magnetic yoke and integrated array ring, the magnetic yoke connects the magnet ring and the shaft, wherein the magnet ring is an integrated array ring.
Description
Technical field
The present invention relates to motor device fields, more particularly, to the micromotor of application an array ring.
Background technique
Present motor be applied to many fields, such as: household electrical appliance, automobile, household, industrial production, mobile device
Deng, deisgn approach in miniaturization, lightness, but have has very high pursuit to torque simultaneously.Therefore, motor device is small-sized
Changing is also a trend.
Therefore, some household electrical appliance such as refrigerator, air-conditioning etc., because to need motor to do more small-sized for the requirement of its volume,
And a part as its structure, motor are also increasingly partial to miniaturization and lightweight, in order to preferably carry and use.
For motor, problem to be solved is, how light-weighted while keeping its high torque and high efficiency.
Current most of minitype permanent magnet motor rotors in the market often use radiation magnetic loop, or using sintering tile
The mode of neodymium iron boron splicing.Mostly use bonded neodymium-iron-boron etc. compared with weak magnetic magnet ring using radiation ring, weaker magnetism makes consubstantiality
The lower Motor torque obtained of product is smaller.Also there is the rotor using sintering radiation ring material, magnetism not enough reaches motor always
Demand.Although being increased using sintering tile splicing rotor field, assembly is inconvenient, and generally requires outside magnetic shoe
Set upper jacket prevents magnetic shoe from throwing away, and had not only increased the width of air gap so equally but also had reduced magnetic field utilization rate.And lesser
Spliced on rotor using four pairs of poles or the above number of poles, needs to control consistency and very high requirement just is proposed to technique.So
A large amount of micromotor still uses the structures such as extremely of two pairs of poles or three pairs, but this design is because cogging torque reaches requirement,
And be not suitable for applying in servo motor.
Generally, in traditional magneto, magnet generallys use the mode of radial magnetizing or parallel magnetization.But this
Sine is not high in the air-gap field of kind internal rotor, and there are many harmonic content, cannot fundamentally improve the performance of motor.Permanent Magnet and Electric
One of intrinsic phenomenon of machine is exactly the interaction between magnet and tooth socket, that is, the source of tooth socket torque, and then generates vibration
Dynamic and noise.In high-precision motor and its system, tooth socket torque is to need the problem of considering.Tooth socket torque and motor knot
Be also between structure parameter there are relationship, such as energy method, including the slot number of motor, number of pole-pairs, the length of armature core,
The parameters such as pole embrace, air gap flux density.The especially pole embrace of permanent magnet or eccentricity all can intuitively change.
Up to the present industry of motor production has become a social base industry, whether life furniture, industry
Equipment etc., suffers from and is widely applied very much.One good motor, outstanding rotor are essential.
In the prior art, the sintered NdFeB radiation ring is some limitations below because preparation process limits to: the
One, radiation ring performance does not high (its maximum magnetic energy product is usually no more than 40Mgoe)；The second, radiation ring filling magnetizes the wave to be formed
Shape is often rectangular wave or trapezoidal wave, needs to weaken the orientation that magnetizes on pole center point both sides if necessary to form sinusoidal waveform
Degree, is failed in the magnetite for making a big chunk volume, a large amount of waste waste rare earth materials；Third, because orientation
And sintering process limitation, often height limitation is big for radiation ring, is usually no more than 25mm, and many motors need muti-piece to splice, and increase
The difficulty of assembly；4th, because orientation process limits, radiating the degree of orientation of ring, often both ends are higher than centre, in this way in height
Intermediate magnetic field strength can be poorer than both ends, reduces electric efficiency and its consistency.
In motor application, the volume for radiating ring be difficult to do it is small, problem here is that, radiate the opposite volume institute of ring
Corresponding torque wants small, that is to say, that reach torque it is certain in the case where, the volume for radiating ring cannot be substantially reduced.
In addition, if necessary to corresponding torque, electric current needs when the power of the radiation ring does not reach requirement
Increase, and accordingly, the number of turns of the stator of motor needs to increase, and electric current will increase by the copper loss of the number of turns of stator,
That is, therefore the calorific value of the radiation ring can increase, cause the bulk temperature of motor that can increase, and high temperature has centainly
Probability cause magnet ring demagnetization.
And as shown in Figs. 1-2, Fig. 1 is the theoretical field waveform figure for radiating ring, and Fig. 2 is the true field waveform for radiating ring
Figure.It can be seen that be presented in field waveform figure is generally rectangular shaped wave, actually makes after if the radiation ring all magnetizes
With in the process, field waveform figure is that sine wave is more preferred.Many enterprises use the radiation ring is magnetized after formed
Sine wave, therefore wherein the inside of the radiation ring has some positions not to be magnetized to have magnetism.On exactly because
The comprehensive utilization ratio of the reason of stating, the radiation ring is not high.
Summary of the invention
It is an object of the present invention to provide the micromotors of application an array ring, wherein the rotor of the motor
Magnet ring magnetic material utilization rate it is high, improve the service efficiency of magnet.
It is another object of the present invention to provide the micromotors of application an array ring, wherein the body of the motor
Product is smaller compared to the ratio for the torque that the motor generates, that is to say, that in the case where same magnet ring volume, the motor can
To provide bigger torque, the motor can enable the volume of the motor in the case where providing same torque
It reduces.
It is another object of the present invention to provide the micromotors of application an array ring, wherein the magnetic of the motor
The distribution in the outer surface magnetic field of ring is gentle, so that the outer surface magnetic field is strong along high consistency.
It is another object of the present invention to provide the micromotors of application an array ring, wherein the magnet ring uses
Array orientation, so that magnetic energy product is higher.
It is another object of the present invention to provide the micromotors of application an array ring, wherein the magnet ring is satisfied
After magnetizing with ground, outer surface Distribution of Magnetic Field shows as smooth sine wave, and the magnet ring inner wall magnetic field cancellation drops
Low outer wall magnetic-field extrusion enhancing, considerably increases the utilization rate of magnetic material and reduces rotor rim magnetic loss.
It is another object of the present invention to provide the micromotors of application an array ring, wherein the micromotor
The magnet ring using the techniques such as compacting of floating, the magnet ring can achieve the height of 45mm or more, reduce assembled difficulty.
It is another object of the present invention to provide the micromotors of application an array ring, wherein the magnetic of the motor
Ring is high to the contribution rate of its outer surface air-gap field intensity, small to the magnetic field strength effect of the magnet ring inner surface.
It is another object of the present invention to provide the micromotors of application an array ring, wherein the motor is same
In the case where the number of turns, when reaching same torque, required electric current is reduced, caused by copper loss it is less, wherein the calorific value of the motor subtracts
It is few, avoid motor temperature increase caused by demagnetize.
It is another object of the present invention to provide the micromotors of application an array ring, wherein the motor turns
Son uses integrally formed array ring, and the advantage of the rotor is to reduce root diameter in the case where providing same torque to subtract
Weak rotor inertia, so that the motor accelerates and slow down have outstanding performance.
It is another object of the present invention to provide the micromotors of application an array ring, wherein the magnetic of the motor
Ring is a magnet ring being orientated in the form of an array, i.e. an array ring, the tooth socket torque using the motor of the array ring is subtracted
It is weak, to promote the efficiency of the motor.
It is an object of the present invention to provide the micromotors of application an array ring, wherein the magnet ring of the motor
Number of poles be it is predetermined before orientation, cannot be modified after orientation.
It is an object of the present invention to provide the micromotors of application an array ring, wherein the magnet ring of the motor
It is integrally to be produced.
It is an object of the present invention to provide the micromotors of application an array ring, wherein the magnet ring of the motor
Be integral array type be produced with being oriented, improve the consistency of axial direction upper outer surface Distribution of Magnetic Field.
According to one aspect of the present invention, the present invention provides the micromotors of application an array ring, wherein the electricity
Machine includes a rotor and a stator, wherein the stator forms a rotor accommodating chamber, the rotor, which is arranged on the rotor, to be held
Receive in chamber, wherein the magnetic field that the rotor cooperates the stator to generate in the rotor accommodating chamber and rotate.
According to one aspect of the present invention, the present invention provides the micromotor of application an array ring, the rotor packets
A change and a shaft are included, wherein the change and the shaft are permanently connected, wherein the shaft is arranged on described turn
Ring center, and direction extends in the axial direction.
According to one aspect of the present invention, the present invention provides the micromotor of application an array ring, the change packets
A magnetic yoke and a magnet ring are included, the magnet ring and the magnetic yoke are connected with each other, and the magnetic yoke is located at the magnet ring and described turn
Between axis.
According to one aspect of the present invention, the present invention provides the micromotors of application an array ring, wherein the magnetic
Ring is an integrated magnet ring.
According to one aspect of the present invention, the present invention provides the micromotors of application an array ring, wherein the magnetic
Ring is an array ring.
According to one aspect of the present invention, the present invention provides the preparation method of an array ring and the array ring,
Described in preparation method include；
A, a preparation magnetic powder is manufactured；
B, it is orientated the prepared magnetic powder；
C, the prepared magnetic powder in step b is compressed to a magnet ring by compression moulding；And
D, it magnetizes.
According to one aspect of the present invention, the present invention provides a microscopic electro-mechanical systems characterized by comprising an electricity
Owner's body；And a control assembly, wherein the control assembly controllably and is communicatively coupled the motor body, so that
The motor body is driven and is controlled by the control assembly.
Detailed description of the invention
Fig. 1 magnetizes for the theory of radiation ring in the prior art is namely fully oriented the variation wave of rear generated Surface field
Shape.
Fig. 2 be after radiating actually the magnetizing of ring in the prior art namely sine wave be orientated caused by Surface field change
Change waveform.
Fig. 3 be the Surface field of array ring of the invention after magnetizing variation waveform, further with Fig. 1 and Fig. 2
It compares.
Fig. 4 is the structural schematic diagram of micromotor of the invention.
Fig. 5 A is the diagrammatic cross-section of micromotor of the invention.
Fig. 5 B is the schematic cross-section of micromotor of the invention.
Fig. 6 is the decomposition diagram of micromotor of the invention.
Fig. 7 A-D is magnet ring of the invention in preparation process.
Specific embodiment
It is described below for disclosing the present invention so that those skilled in the art can be realized the present invention.It is excellent in being described below
Embodiment is selected to be only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.It defines in the following description
Basic principle of the invention can be applied to other embodiments, deformation scheme, improvement project, equivalent program and do not carry on the back
Other technologies scheme from the spirit and scope of the present invention.
It will be understood by those skilled in the art that in exposure of the invention, term " longitudinal direction ", " transverse direction ", "upper",
The orientation or position of the instructions such as "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside"
Relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, rather than
The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore above-mentioned
Term is not considered as limiting the invention.
It is understood that term " one " is interpreted as " at least one " or " one or more ", i.e., in one embodiment,
The quantity of one element can be one, and in a further embodiment, the quantity of the element can be it is multiple, term " one " is no
It can be interpreted as the limitation to quantity.
As shown in figs. 4 and 6, the structural schematic diagram and decomposition diagram of micromotor of the invention, is elucidated with, described micro-
Type motor 10 includes a rotor 12 and a stator 11, wherein the stator 11 has a rotor accommodating chamber 110, to accommodate described turn
Son 12, wherein the rotor 12 rotates in the rotor accommodating chamber 110 in the stator 11.The rotor 12 includes one turn
Axis 122 and a change 121, wherein the shaft 122 is arranged between the change 121, the shaft 122 and the change
121 are permanently connected.
Further, the change 121 includes a magnetic yoke 12111 and a magnet ring 12121, wherein the magnetic yoke 12111
Between the magnet ring 12121 and the shaft 122, wherein the magnetic yoke 12111 is connected to the magnet ring 12121 and described turn
Axis 122.
As shown in Fig. 5 A, 5B, the sectional view of micromotor of the invention is elucidated with, and specifically, the stator 11 includes one
Outer collarette 111 and inwardly protruded multiple rolls 112, wherein the inward shape of the roll 112 be arranged in it is described outer
Collarette 111, wherein forming a groove 113 between the roll 112, the top of the roll 112 has one to prevent end,
In one group of coiling wound centered on the roll 112, the coiling is on the roll 112.
Further, the diameter dimension of the outer collarette 111 is defined as the outer diameter of the stator 11, the roll
The top of 112 volumes is formed by the internal diameter that a circular diameter dimension is defined as the stator 11.Further, described fixed
Son 11 starts coiling on the roll 112, so that the roll 121 forms an electromagnet coil.
The stator 11 preferably carries out coiling by the way of chain type coiling, and armature winding all uses copper,
So that the improved efficiency of the micromotor 10.Because the figure of the micromotor 10 in this preferred embodiment is smaller,
Be not suitable for hand winding, so by using linear chain type coiling, finally around welding cyclization.In this way, the stator 11 is made
Difficulty reduction is made, and precision is higher, and is suitable for large-scale production.The stator 11 includes multiple groups coiling, wherein
The stator 11 is corresponding with the magnet ring 12121 of the rotor 12 so that one group of coiling pair magnetic field in rotation
It is variation in the process.
In addition, the shaft 122 is adapted to an external equipment in the motor application, so that the rotor 12 is in institute
It states and the external equipment is driven to rotate while rotation in rotor accommodating chamber 110.
Heretofore described magnet ring 12121 is the magnet ring 12121 of integration, is set to 12121 one-pass molding of magnet ring
It sets in the magnetic yoke 12111, integrated magnet ring 12121 is in advantage, on the one hand convenient for manufacture and assembly, on the other hand,
Improve the service life that its integral strength improves the magnet ring 12121.
Integrated magnet ring 12121 of the invention is defined as an array ring 12122, wherein the array ring 12122 is compared
In the radiation ring of the prior art, Surface field is distributed as sine wave.Although the surface of the radiation ring in the prior art
Distribution of Magnetic Field is also sine wave, however the surround the area of the sine wave of the array ring 12122 is greater than the radiation ring.
Specifically, the array ring 12122, internal diameter range is in 0mm-76mm, and outer diameter range is in 8mm-
80mm, the array ring 12122 is under the output torque of the same motor, the radiation of size compared with the prior art
Ring is small.
Further, the optional size of the motor is set between 16mm-160mm, the stator 11 and the rotor 12
It is equipped with an air gap 13, the range of the air gap 13 is in 0.3mm-2mm, wherein the reduction of the air gap 13 is so that the micromotor
10 concentricity is very high, so that it is able to maintain stabilization in rotation.Certainly, the size of the stator 11 and the rotor 12 is not
It is limited to φ 15mm and φ 80mm, in addition the outer diameter of the internal diameter of stator 11 and the rotor 12 described in feasible mode can be by
Setting is to keep air gap 13 to be 1mm and hereinafter, make 13 field homogeneity of air gap, stabilization.
Specifically, the size of the magnet ring 12121 in the present invention is predetermined certain range, wherein the stator 11
Inside diameter ranges are between 8mm-80mm, wherein the external diametrical extent of the stator 11 is between 16mm-160mm, wherein the rotor
12 inside diameter ranges are in 0mm-76mm, wherein the external diametrical extent of the rotor 12 is in 8mm-80mm.
Further, in one embodiment, the inside diameter ranges of the rotor 12 are in 0mm-16mm, external diametrical extent in 8mm-
20mm, the external diametrical extent of the stator is in 16mm-40mm.
Further, in one embodiment, the inside diameter ranges of the rotor 12 exist in 16mm-26mm, external diametrical extent
20mm-30mm, the internal diameter of the stator, external diametrical extent are in 40mm-60mm.
Further, in one embodiment, the inside diameter ranges of the rotor 12 exist in 26mm-36mm, external diametrical extent
30mm-40mm, the internal diameter of the stator, external diametrical extent are in 60mm-80mm.
Further, in one embodiment, the inside diameter ranges of the rotor 12 exist in 36mm-46mm, external diametrical extent
40mm-50mm, the internal diameter of the stator, external diametrical extent are in 80mm-100mm.
Further, in one embodiment, the inside diameter ranges of the rotor 12 exist in 46mm-56mm, external diametrical extent
50mm-60mm, the internal diameter of the stator, external diametrical extent are in 100mm-120mm.
Further, in one embodiment, the inside diameter ranges of the rotor 12 exist in 56mm-66mm, external diametrical extent
60mm-70mm, the internal diameter of the stator, external diametrical extent are in 120mm-140mm.
Further, in one embodiment, the inside diameter ranges of the rotor 12 exist in 66mm-76mm, external diametrical extent
70mm-80mm, the internal diameter of the stator, external diametrical extent are in 140mm-160mm.
It should be noted that wherein the stator 11 can select corresponding number of poles according to scheduled slot number.It is wherein described fixed
Son can also select corresponding slot number according to preset number of poles.The relationship of the number of poles and slot number is as shown in table 1.
| Slot number | 3 | 6 | 9 | 12 | 15 | 18 | 21 | 24 | 27 | 30 | 33 | 36 | 39 | 42 | 45 | 48 |
| Number of poles | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| 6 | 8 | 10 | 6 | 8 | 8 | 6 | 8 | 8 | 6 | 8 | 8 | 6 | 8 | |||
| 8 | 10 | 8 | 14 | 10 | 8 | 10 | 10 | 8 | 10 | 10 | 8 | 10 | ||||
| 12 | 18 | 12 | 16 | 16 | 10 | 20 | 14 | 10 | 14 | 14 | 10 | 14 | ||||
| 14 | 20 | 12 | 22 | 20 | 12 | 16 | 16 | 12 | 16 | |||||||
| 16 | 18 | 26 | 22 | 14 | 26 | 26 | 14 | 20 | ||||||||
| 20 | 26 | 16 | 28 | 28 | 16 | 32 | ||||||||||
| 22 | 28 | 22 | 32 | 32 | 20 | 34 | ||||||||||
| 24 | 24 | 34 | 34 | 28 | 38 | |||||||||||
| 26 | 30 | 40 | ||||||||||||||
| 28 | 32 | |||||||||||||||
| 30 | 34 | |||||||||||||||
| 32 | 38 |
Table 1
Inevitably, the motor has an output torque, and the torque will affect the efficiency of the motor.The array ring
12122 sine wave magnetic field is distributed so that magnetic flux is big in 12 rotor of rotor, 12 accommodating chamber 110 for passing through the motor, further
Ground improves the torque, and the torque is higher, the also available promotion of the efficiency of motor.
It is noted that the array ring 12122 of the rotor 12 arranges magnetic field array, so that array is on one side
Magnetic field significantly increase and another side is obviously reduced, obtain obtaining the magnetic field of Sine distribution, making on 12122 surface of array ring
With least magnet and obtain strongest magnetic field.Further, it is provided 12 surface of the rotor of the array ring 12122
Magnetic field is distributed in uniform sinusoidal.
In conjunction with the motor that the above-mentioned array ring 12122 is assembled, compared to radiation ring, under equal volume, the battle array
The torque of the motor that column ring 12122 is assembled, output is larger, and since the relationship of torque and power is direct ratio, that is,
It says, the output power for the motor that the array ring 12122 is assembled is greater than the radiation ring.
In other words, the micromotor 10 of the invention reaches certain power, and torque do not need very high, bring
Beneficial effect is that electric current is reduced, and then the number of turns of the coil of coiling is reduced on the roll 112 of the stator 11.
The reduction of the coil, copper loss caused by the electric current by coil caused by the coil are reduced, the copper
It damages directly proportional to the calorific value of the micromotor 10, that is to say, that the calorific value of the micromotor is reduced, compared to existing
The number of turns of the radiation ring in technology, the coiling of the roll 112 is reduced, and the copper loss is reduced, and brings calorific value
A possibility that reducing, on the one hand avoiding 12122 high temperature of array ring demagnetization, on the other hand, the heat dissipation for micromotor
Environment.
Further, invention defines a torque size ratio, the torque size is than in the array ring 12122
Diameter is than the value of the torque, and wherein volume is the internal-and external diameter of the array ring 12122, wherein the torque is assembled in the motor
Output torque when applying afterwards.The torque size specific torque size ratio than measurement and can be compared by torque size,
Another embodiment of the torque size ratio defined in the present invention, wherein the torque size ratio is the battle array
The outer diameter of column ring 12122 is than the upper torque, wherein the outer diameter is measured before the array ring 12122 is mounted,
Described in torque after the motor is completed be measured, the torque size ratio can be applied to radiation in the prior art
Ring, so that the torque size ratio obtained, the two can compare, the array ring 12122 of the invention and the prior art
In radiation ring be difficult to be resolved in appearance and form, that is to say, that measurement and ratio by the torque size ratio
Compared with user can discern whether it is to belong to the array ring 12122 of the invention.
Another embodiment of the torque size ratio defined in the present invention, wherein the torque size ratio is described fixed
The internal diameter of son 11 is than the upper torque, wherein the internal diameter is measured before the array ring 12122 is mounted, wherein described
Torque is measured after the motor is completed, and the torque size ratio can be applied to radiation ring in the prior art, with
Make the torque size ratio obtained, the two can compare, the array ring 12122 of the invention and spoke in the prior art
It penetrates ring to be difficult to be resolved in appearance and form, that is to say, that by the measurement of the torque size ratio and compare, use
Person can discern whether it is to belong to the array ring 12122 of the invention.
Another embodiment of the torque size ratio defined in the present invention, wherein the torque size ratio is described fixed
The outer diameter of son 11 is than the upper torque, wherein the outer diameter is measured before the array ring 12122 is mounted, wherein described
Torque is measured after the motor is completed, and the torque size ratio can be applied to radiation ring in the prior art, with
Make the torque size ratio obtained, the two can compare, the array ring 12122 of the invention and spoke in the prior art
It penetrates ring to be difficult to be resolved in appearance and form, that is to say, that by the measurement of the torque size ratio and compare, use
Person can discern whether it is to belong to the array ring 12122 of the invention.
Another embodiment of the torque size ratio defined in the present invention, wherein the torque volume is described fixed
Son 11 and the torque on the odds ratio of 12 size of rotor, wherein the rotor 12 that the stator 11 is adapted to it is interior
Diameter can be measured before being mounted, wherein the torque is measured after the motor is completed, the torque size ratio
It can be applied to radiation ring in the prior art, so that the torque size ratio obtained, the two can be compared, of the invention
The array ring 12122 is difficult to be resolved with radiation ring in the prior art in appearance and form, that is to say, that passes through
The measurement of the torque size ratio and compare, user can discern whether it is to belong to the array ring 12122 of the invention.
Specifically, the size of the stator 11 and the rotor 12 is respectively its internal diameter.
In another group of data, the size of the stator 11 and the rotor 12 is respectively its outer diameter.
Citing ground, in one embodiment of the invention, 11 internal diameter of stator of the micromotor 10 are 21.5mm, stator
11 outer diameters are 47mm, and 12 internal diameter of rotor of the micromotor 10 is 8mm, and 12 outer diameter of rotor is 20mm, the stator and described
The size of the micromotor 10 of the assembled formation of rotor 50-100mm between, further measurement it is found that measurement strip
Part is 24V, 3000RPM, 80W, and measuring its torque is that 0.25N*M is converted into N*mm, and the torque is 250N*mm, (confirmation torque
The range of size ratio)
Further, by above-mentioned torque size ratio, wherein the diameter of stator bore is 21.5mm, the torque size ratio is
11.63, wherein the calculating source of the torque cell of the torque size ratio is the ratio between N*mm and mm.
Further, by above-mentioned torque size ratio, wherein the stator outer diameter is 47mm, the torque size ratio is
5.32, wherein the calculating source of the torque cell of the torque size ratio is the ratio between N*mm and mm.
Further, by above-mentioned torque size ratio, wherein the rotor internal diameter is 8mm, the torque size ratio is
31.25, wherein the calculating source of the torque cell of the torque size ratio is the ratio between N*mm and mm.
Further, by above-mentioned torque size ratio, wherein the rotor diameter is 20mm, the torque size ratio is
12.5, wherein the calculating source of the torque cell of the torque size ratio is the ratio between N*mm and mm.
Using same size and same determination condition, using the radiation ring Technical form at the motor institute
The 160N*mm that the torque of measurement is.
According to above-mentioned data, torque size in the present invention than the torque size in compared with the prior art than big, that is,
It says, compared to the magnet ring 12121 with the prior art, for the array ring 12122 while providing identical torque, what is needed is described
12122 size of array ring is far smaller than the radiation ring.The array ring 12122 uses same size, and the motor can obtain
It is exported to bigger torque.Therefore, the volume of the array ring 12122 can become smaller.
Based on the above-mentioned characteristic of the array ring 12122 of the invention, so that the array ring 12122 is in the micro electric
Application in machine 10, so that the size of the micromotor 10 is made smaller therewith.
According to the distribution map of the Surface field of the array ring 12122, the present invention further defines a contribution rate, institute
Stating contribution rate is that the array ring 12122 radiates surface magnetic in the case of magnetizing with the magnet ring 12121 using identical energy
The ratio between the waveform diagram of field.
It will be appreciated by those skilled in the art that the benefit that the performance waveform of Surface field is sine wave is far longer than
Square wave.Therefore, many enterprises or personal when magnetizing to the radiation ring are magnetized mode using radiation, that is to say, that
Certain some parts of the radiation ring do not magnetize.It is embodied on distribution map, is cut similar to by the square wave, with
It is set to be similar to the sine wave.
As shown in figure 3, the array ring 12122 is after being prepared, 12122 Surface field of array ring such as wherein institute
The waveform for stating the Surface field of array ring 12122 shows the string waveform that is positive.At this point, the array ring 12122 is compared to using phase
The co-energy and radiation ring that magnetizes, on the one hand part all in the array ring 12122 can be utilized, and
Its changes of magnetic field is sinusoidal waveform after magnetizing, and the maximum waveform of 12122 sinusoidal waveform of array ring is greater than the radiation ring.Separately
On the one hand compared to the waveform diagram of the Surface field of the radiation ring, it will be apparent that the radiation ring is after all magnetizing, table
Face Distribution of Magnetic Field shows as a square waveform.That is, for the radiation ring not made any changes prepared,
Distribution of Magnetic Field inside and outside it is exactly a square waveform substantially.In order to which the Surface field of the radiation ring is tended to sine wave,
Middle part magnet is not magnetized, and thus bring is not as a result, necessarily some has in fact in the radiation ring
It is utilized contribution magnetic field.And it is piecemeal splicing, whole material that the radiation ring, which is more the manufacturing method used,
Expect that utilization rate is not high.
Also, radiating sine wave orientation of the ring after being fully oriented and weakening also has certain difference, generally, sine wave orientation
About it is weakened 15%, that is to say, that for radiating ring, the waveform occupied area for 100% is fully oriented, shared by sine wave orientation
Area ratio 85%.
Relatively, the array ring 12122 in the present invention is due to being orientated completion in the magnetic powder stage, described in entirety
The Surface field of array ring 12122 is exactly later sine wave by magnetizing.One of advantage is, passes through the array ring
12122 magnetic flux is greater than the radiation ring in specified range.
It is noted that uniform fan-shaped variation is presented in the internal magnetic field of the array ring 12122, in the array ring
12122 wherein one extremely in, wherein both sides magnetic direction is evenly towards central axes.
Specifically, the area that the Surface field of the array ring 12122 is formed by sinusoidal waveform is Z, is filled completely
The area that the Surface field of the radiation ring on magnetic is formed by square waveform is LF, the institute of the actual radiation ring
The area for stating the formed sine wave of Surface field is SF, and the size of the waveform is represented to be led in the case where the waveform
Magnetic flux therein is crossed, area is bigger, and magnetic flux is more.
Therefore, a kind of manifestation mode of the contribution rate in the present invention, the ratio of contribution rate are the array ring
Ratio caused by the square wave of the radiation ring in the area ratio of 12122 sine wave.
Another manifestation mode of the contribution rate in the present invention, wherein the ratio of the contribution rate is the array
Ratio caused by the practical sinusoidal wave of the radiation ring in the area ratio of the sine wave of ring 12122.
Another manifestation mode of the contribution rate in the present invention, wherein the ratio of the contribution rate is the radiation
The ratio of the practical sinusoidal wave of the radiation ring in the area ratio of the theoretical sine wave of ring.
According to the contribution rate, it is evident that the array ring 12122 is larger for the contribution of Surface field, that is to say, that
If it is identical area, the magnetic flux that the array ring 12122 is passed through is greater than the radiation ring, similarly, the magnetic
It is the high-efficient of motor that the array ring 12122 is assembled into that the size of flux, which is also meant,.
Citing ground, the contribution rate of different magnet rings 12121 as shown in the table.
According to the array ring of the magnetic powder of comparable size equivalent material preparation and radiation ring, by taking 10 grades of magnet rings as an example, the battle array
The area that the single wave crest of column ring 12122 is surrounded is 12000 (mT*Deg), what the single wave crest of the radiation ring was surrounded
Area is 10000 (mT*Deg), wherein the benchmark that the contribution rate is 100% with the array ring, the tribute of the radiation ring
Offer the area of the single wave crest of the radiation ring in the area ratio that rate is surrounded by the single wave crest of the array ring 12122.
Further, the contribution rate of the radiation ring, which is divided into being fully oriented, is orientated two kinds with sinusoidal, wherein
| Array ring 12122 | Radiation ring is fully oriented | Radiate ring sine orientation | |
| Contribution rate | 100% | 83.3% | 70% or less |
By above table, it is found that the contribution rate of the array ring 12122 is greater than, the radiation ring is fully oriented and sine is orientated.
In the actual production process, the magnet ring 12121 of the prior art preparation when, orientation be after formation,
And its magnet ring 12121 be it is assembled complete, the variation in the magnetic field of assembling part it is difficult to predict.And the array ring of the invention
12122 magnetic field is predictable, and is gently to change.
The present invention further provides the preparation method of the magnet ring 12121, the preparation side of the integration magnet ring 12121
Method, and the preparation method of the array ring 12122 is provided, step includes:
A, a preparation magnetic powder is prepared；
B, it is orientated the prepared magnetic powder；
C, it is integrally formed, a magnet ring 12121 is formed by the prepared magnetic powder compacting；And
D, magnetize the magnet ring 12121.
In step a, further include:
The ingredient of a1, raw material by assignment system, being formulated for manufacture magnetic powder；
A2, melting carry out melting to the raw material for completing to prepare so that it is uniformly mixed；And
A3, the raw material after melting is crushed, the magnetic powder for manufacturing magnet ring 12121 is made.
In stepb, further include:
B1, the magnetic powder by orientation and is suppressed, magnetic base is made；
B2, the magnetic base is orientated with determining number of poles and orientation.
It further include sintering and bonding two ways in step c, one of which is sintering, is carried out to the magnetic base
Sintering tempering, integrated shaped magnet is made；Another kind is bonding, a binder is added among the magnetic base, in turn
So that the magnetic base is solidified into magnet ring 12121.
It is noted that sintering magnet ring 12121 comes without take-up strap band on the outside or stainless steel sleeve in compacting link
The destruction of centrifugal force is prevented, 13 very little of the air gap of the stator 11 and the rotor 12 can be made, and then is greatly improved
The power of motor.
In step d, wherein identified number of poles and orientation consistent pole when by being orientated to the magnet ring 12121
Several and orientation magnetize and then forms an array ring 12122.
In above-mentioned orientation step, the orientation is orientated according to the magnetic direction of the array ring 12122.
According to the array ring 12122 of above-mentioned preparation method, the array ring 12122 is burnt using NdFeB rear-earth material
Knot is made.In its preparation process, as shown in Fig. 7 A-D.Wherein Fig. 7 A is indicated described in step a, Fig. 7 B expression of the preparation method
Step b, Fig. 7 C of preparation method indicate that step c, Fig. 7 D of the preparation method indicate the step d of the preparation method.
And in the present invention, it is orientated during magnetic powder, during magnetic powder is formerly orientated, forms certain distribution, so
Compacting sintering afterwards can prepare the array ring 12122 of perfect magnetic field array variation.
Using the one-time formed array ring 12122, have in the weakening of the tooth socket torque of the motor very big
Advantage.That is, in the micromotor 10 of the invention, mainly by the integrated performance of the array ring 12122
And weaken tooth socket torque, and the array ring 12122 is used, so that tooth socket torque significantly declines, and then provide the defeated of entirety
Power out.
Again because the array ring 12122 by being integrally formed is prepared, without bonding agents such as glue.Therefore, so array
Ring 12122 will not be detached from high temperature, or have the reduction of performance.In this way, the array ring 12122 can be by the height of magnetic powder
Warm nature can show.That is, the array ring 12122 can assist improving the high-temperature behavior of the micromotor 10.
In the present embodiment, the array ring 12122 uses magnetic Nd-Fe-B ring.The thickness of the array ring 12122 is than tradition
Rare earth magnetic it is thicker, under high temperature environment, the array ring 12122 there will not be the great fluctuation process in performance, then the battle array
The stability and high-temperature behavior of column ring 12122 have promotion.
And it will be appreciated by persons skilled in the art that the array ring 12122 of the invention it is small in size, provide identical
Torque on the basis of, the torque size is than big, that is to say, that volume can be reduced, and in other words, the range of application is more
Extensively.
Those skilled in the art can weaken tooth socket torsion it is also contemplated that by selecting reasonable pole slot cooperation
Square.In the present invention in one embodiment, the array ring 12122 of the rotor 12 is the setting of 10 poles, corresponding
The stator 11 be 12 slots.In addition, the pole slot ratio of the stator 11 and the rotor 12 is it is also possible to 6 pole, 9 slot, and 8 pole, 9 slot, 8
12 slot of pole, 10 pole, 12 slot, 4 pole, 15 slot；16 pole, 18 slot, 8 pole, 18 slot, 12 pole, 18 slot, 20 pole, 24 slot, 32 pole, 36 slot etc., it is specific its
His pole slot ratio is referring to upper table 1.
It should be noted that the array ring 12122 was integrally formed, the number of poles division in figure does not represent the battle array
Column ring 12122 is separated in shape.Moreover, the magnetic pole distribution of the array ring 12122 is array distribution, that is to say, that
The Surface field of the array ring 12122 is into Sine distribution, and Surface field has 10 magnetic poles.Those skilled in the art
It should be understood that the magnetic pole for mutually staggering 6 ° is that preferred orientation subtracts while just can guarantee that the micromotor 10 is fully functional in this way
Few tooth socket torque, inhibits torque ripple.
According to the motor that the array ring 12122 is assembled, the present invention further provide a kind of micromotor 10 and its
Microscopic electro-mechanical systems, the micromotor 10 and its microscopic electro-mechanical systems include a micromotor 10 and a control assembly, wherein
The micromotor 10 is communicably connected with each other with the control assembly, and the micromotor 10 is driven simultaneously by the controller
Control.The control assembly further comprises a position sensor and an electronic commutating device.The motor body is further
Including the stator 11 and the rotor 12, wherein the position sensor is placed in the motor body for detecting described turn
Rotation position of the son 12 relative to the stator 11, the electronic commutation circuit are connected to the stator 11, and the electronics changes
It cooperates to circuit and the position sensor so that the rotor 12 continuously, is effectively rotated with the electronics.According to
The micromotor 10 and its control system, can be applied to much suitable field, including textile industry, auto industry,
The fields such as household appliance, feature small in size, so that the equipment for using the motor in these fields, volume subtract therewith
It is few.According to the microscopic electro-mechanical systems, wherein the size range of the motor body is in 20-160mm.
The size range of rotor described according to the present invention and the stator, the micromotor size range have more
Kind embodiment.
According to another embodiment of the invention, the size range of the micromotor of the invention is in 20-30mm.
According to another embodiment of the invention, the size range of the micromotor of the invention is in 30-40mm.
According to another embodiment of the invention, the size range of the micromotor of the invention is in 40-50mm.
According to another embodiment of the invention, the size range of the micromotor of the invention is in 50-60mm.
According to another embodiment of the invention, the size range of the micromotor of the invention is in 60-70mm.
According to another embodiment of the invention, the size range of the micromotor of the invention is in 70-80mm.
According to another embodiment of the invention, the size range of the micromotor of the invention is in 80-90mm.
According to another embodiment of the invention, the size range of the micromotor of the invention is in 90-100mm.
According to another embodiment of the invention, the size range of the micromotor of the invention is in 100-110mm.
According to another embodiment of the invention, the size range of the micromotor of the invention is in 110-120mm.
According to another embodiment of the invention, the size range of the micromotor of the invention is in 120-130mm.
According to another embodiment of the invention, the size range of the micromotor of the invention is in 130-140mm.
According to another embodiment of the invention, the size range of the micromotor of the invention is in 140-150mm.
According to another embodiment of the invention, the size range of the micromotor of the invention is in 150-160mm.
One of advantage of the array ring 12122 is that its rotor inertia is small, that is to say, that it accelerated and slowed down
Ability, citing ground, the variation that the array ring 11122 turns in 0-4000, it is only necessary to 8ms, that is, 12122 energy of array ring
Enough processes for completing to accelerate and slow down in a very short period of time.That is, when the array ring 12122 is used in some need
The field for wanting motor to move back and forth, outstanding performance will be applied to each equipment.
According to the micromotor 10 and its microscopic electro-mechanical systems, much suitable field can be applied to, including spin
The fields such as weaver's industry, auto industry, household appliance, feature small in size, so that setting using the motor in these fields
Standby, volume is reduced therewith.
According to the micromotor and its microscopic electro-mechanical systems, it is suitable for servo electrical machinery systems, are answered with improving motor
Efficiency and range, and controllably degree is high.
It should be understood by those skilled in the art that foregoing description and the embodiment of the present invention shown in the drawings are only used as illustrating
And it is not intended to limit the present invention.The purpose of the present invention has been fully and effectively achieved.Function and structural principle of the invention exists
It shows and illustrates in embodiment, under without departing from the principle, embodiments of the present invention can have any deformation or modification.
Claims (10)
1. a micromotor characterized by comprising
One stator, the stator have a rotor accommodating chamber, wherein the stator has multiple rolls, between the roll
Form a stator slot；And
One rotor, the rotor is rotatably disposed in the rotor accommodating chamber, wherein rotor described in the stator surrounding,
Wherein the rotor includes a change and a shaft, wherein the shaft and the change are to be permanently connected, wherein described turn
Axis extends outwardly to form a drive shaft, wherein the change includes a magnetic yoke and a magnet ring, the magnetic yoke connects the magnet ring
With the shaft, wherein the magnet ring is an integrated magnet ring.
2. micromotor according to claim 1, which is characterized in that wherein the magnet ring is an array ring, the array
Ring has a sinusoidal waveform with Surface field described in a Surface field.
3. micromotor according to claim 1, which is characterized in that wherein the ratio between the number of poles and the slot number are 6 poles 9
Slot, 8 pole, 9 slot, 8 pole, 12 slot, 10 pole, 12 slot, 4 pole, 15 slot；16 pole, 18 slot, 8 pole, 18 slot, 12 pole, 18 slot, 20 pole, 24 slot, 32 poles 36
Slot.
4. micromotor according to claim 3, wherein the internal diameter range of the rotor is in 0mm-76mm, wherein institute
The outer diameter range of rotor is stated in 8mm-80mm.
5. micromotor according to claim 4, which is characterized in that wherein the motor provides a torque volume ratio,
Described in micromotor torque ratio on the array ring internal diameter or any size of outer diameter obtain the torque volume
Than.
6. micromotor according to claim 5, wherein the internal diameter range of the stator is in 8mm-80mm, wherein institute
The outer diameter range of stator is stated in 16mm-160mm.
7. micromotor according to claim 1, wherein the size range of the micromotor is in 16mm-160mm.
8. micromotor according to claim 1, wherein the micromotor provides a contribution rate, the contribution rate is institute
State the area that the waveform of the Surface field of array ring is surrounded.
9. a microscopic electro-mechanical systems characterized by comprising
One motor body；And
One control assembly, wherein the control assembly controllably and is communicatively coupled the motor body, so that the electricity
Owner's body is driven and is controlled by the control assembly.
10. microscopic electro-mechanical systems according to claim 9, wherein wherein the motor body includes one to the motor body
Stator and a rotor, the stator are connect with the rotor, so that the rotor is relative to the stator rotation, wherein described
Rotor is using integrated array magnet ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710953284.XA CN109672284A (en) | 2017-10-13 | 2017-10-13 | Using the micromotor of an array ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710953284.XA CN109672284A (en) | 2017-10-13 | 2017-10-13 | Using the micromotor of an array ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109672284A true CN109672284A (en) | 2019-04-23 |
Family
ID=66138951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710953284.XA Pending CN109672284A (en) | 2017-10-13 | 2017-10-13 | Using the micromotor of an array ring |
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| Country | Link |
|---|---|
| CN (1) | CN109672284A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983555A (en) * | 2021-02-22 | 2021-06-18 | 立讯电子科技（昆山）有限公司 | Turbine rotor and turbine rotor motor |
-
2017
- 2017-10-13 CN CN201710953284.XA patent/CN109672284A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983555A (en) * | 2021-02-22 | 2021-06-18 | 立讯电子科技（昆山）有限公司 | Turbine rotor and turbine rotor motor |
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