CN204258475U - Tangential permanent magnetic rotor and motor - Google Patents
Tangential permanent magnetic rotor and motor Download PDFInfo
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- CN204258475U CN204258475U CN201420760080.6U CN201420760080U CN204258475U CN 204258475 U CN204258475 U CN 204258475U CN 201420760080 U CN201420760080 U CN 201420760080U CN 204258475 U CN204258475 U CN 204258475U
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Abstract
The utility model discloses a kind of tangential permanent magnetic rotor and motor, along the radial uniform 2N permanent magnet trough (2) of (1) circumference unshakable in one's determination, the nearly air gap of permanent magnet trough (2) is one side closed, nearly rotating shaft (7) side is connected with air magnet isolation tank (3), and each air magnet isolation tank (3) is communicated with two adjacent permanent magnets groove (2), this air magnet isolation tank number equals rotor pole logarithm.Iron core (1) is separated out a rotating shaft mating part (4) by N number of air magnet isolation tank (3), rotating shaft mating part (4) and pole parts (5) have N place bridge joint (6), and this bridge joint number equals rotor pole logarithm.The pressing plate (8) that (1) two ends unshakable in one's determination are made by non-magnet material is fixed in rotating shaft (7), with (1) end face axial gapless unshakable in one's determination.The utility model is simple and reasonable, effectively can reduce leakage field, improves permanent magnet utilance, ensures the mechanical strength of punching simultaneously, is convenient to assembling.
Description
Technical field
The utility model belongs to technical field of motors, relates to a kind of tangential permanent magnetic rotor and motor.
Background technology
Present stage laundry owner motor permanent magnetic brushless many employings permanent magnet Surface Mount adds the rotor structure of steel bushing.Corresponding washing and dehydration two kinds of operating modes, motor speed difference decades of times.Because the weak magnetism speed expansion ability of permanent magnet surface-mounted rotor is more weak, the turnover rotating speed of motor is usually designed to high value, and when this just causes washing, electric efficiency reduces, and that is washing is difficult to take into account with the efficiency of dehydration, needs tradeoff design.
As everyone knows, permanent magnet built-in rotor structure salient pole, than large, is easy to weak magnetism speed expansion, and mechanical strength is high simultaneously, is highly suitable for the occasion that this needs of washing machine run up.Built-in rotor structure is divided into radial, tangential and hybrid, and when rotor pole logarithm is more, tangential structure can provide larger useful flux, but leakage field is more bottom permanent magnet, as shown in Figure 1.
For this problem, utility model patent 201220032377.1 discloses a kind of built-in tangential permanent magnetic rotor, comprise armature spindle, axle sleeve, rotor core, non-magnetic axle sleeve is set on armature spindle, rotor core is connected to axle sleeve periphery, rotor core is put together by polylith iron core sub-block, and iron core sub-block adjacent in polylith iron core sub-block leaves interval trough to each other, in described interval trough, be provided with magnetic shoe.Utility model patent 201220448338.X discloses a kind of tangential magnetic field brushless DC motor rotor structure with magnetic shield, comprise rotating shaft, rotor block and magnet steel, rotor block is set in rotating shaft, rotor block has rectangular channel along radial direction, described rectangular channel is circumferentially uniformly distributed, and in rectangular channel mounting magnetic steel, it is characterized in that: described rotating shaft is made up of permeability magnetic material, between rotating shaft and rotor block, be provided with magnetic shield, this magnetic shield is made up of non-magnet material.Above two utility model patents all adopt magnetic shield and iron core assembled, structure, complex process, difficulty of processing is large, and cost is higher, limits its range of application.
For above-mentioned shortcoming, utility model patent 201210005017.7 discloses a kind of tangential rotor of electric rotating machine, comprise the rotor be made up of rotating shaft and laminate core, be provided with in laminate core along rotating shaft axis rotate and relatively this axis along the magnetized several permanent-magnet pole portion of periphery of rotor, its permanent-magnet pole portion is embedded in laminate core by permanent magnet trough, the nearly air gap side of described permanent magnet trough is connected with laminate core or disconnects, and the circumferential width at the interval that its nearly rotating shaft side is mutual is 0.1-5 millimeter.The polarity in adjacent permanent magnetic poles portion is contrary.The circumferential width at the interval that permanent magnet trough nearly rotating shaft side is mutual is 0.4-3 millimeter.Utility model patent 201120358011.9 discloses a kind of magneto, comprise the shaping rotor punching of metal plate punching and magnet thereof, the corresponding magnet of rotor punching is provided with the built-in groove of more than one magnet and glue filling opening, magnet is inserted in the built-in groove of magnet, and be integrated encapsulating with punching and arrange, jointly form a p-m rotor.Above two utility model patents simplify tangential rotor structure, but all remain traditional " every magnetic bridge ", so-called " every magnetic bridge " is actually and provides loop to leakage field, in unhelpful every magnetic, its integrality of existence just in order to ensure lamination structure, therefore the size of " every magnetic bridge " is by mechanical strength and every the dual restriction of magnetic effect.Such as, in above-mentioned Section 1 patent, " every magnetic bridge " width is 0.4-3 millimeter, and then mechanical strength is too poor and affect punch die useful life to get 0.4 millimeter, and then leakage field is too serious to get 3 millimeters; Section 2 patent even needs encapsulating to increase the structural strength of rotor.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, proposes a kind of tangential permanent magnetic rotor and motor, and this rotor structure advantages of simple, effectively can reduce leakage field, improves permanent magnet utilance, ensures the mechanical strength of punching simultaneously.
For reaching foregoing invention object, the utility model provides the first technical scheme: a kind of tangential permanent magnetic rotor, it is along the radial uniform 2N permanent magnet trough of circumference unshakable in one's determination, the nearly air gap of permanent magnet trough is one side closed, nearly rotating shaft side is connected with air magnet isolation tank, and each air magnet isolation tank is communicated with two adjacent permanent magnets groove, this air magnet isolation tank number equals rotor pole logarithm.
Preferably, iron core is separated out a rotating shaft mating part by described N number of air magnet isolation tank, and rotating shaft mating part and pole parts have N place bridge joint, and this bridge joint number equals rotor pole logarithm.
Preferably, the pressing plate that described two ends unshakable in one's determination are made by non-magnet material is fixed in rotating shaft, gapless axial with end face of iron core.
For reaching foregoing invention object, the utility model provides the second technical scheme: a kind of motor with tangential permanent magnetic rotor, described tangential permanent magnetic rotor comprises iron core, along the radial uniform 2N permanent magnet trough of circumference unshakable in one's determination, be placed on corresponding permanent magnet trough and form the permanent magnet of 2N rotor magnetic pole of alternating polarity, be communicated with N number of air magnet isolation tank of two adjacent permanent magnets groove, and pass the rotating shaft at center unshakable in one's determination, the nearly air gap of wherein said permanent magnet trough is one side closed, nearly rotating shaft side is connected with air magnet isolation tank, and air magnet isolation tank number equals rotor pole logarithm.
Preferably, iron core is separated out a rotating shaft mating part and pole parts by described N number of air magnet isolation tank, and rotating shaft mating part and pole parts have N place bridge joint, and the number of this bridge joint equals rotor pole logarithm, this bridge joint is between two adjacent air magnet isolation tanks, and the width of bridge joint is preferably at least greater than the width half of permanent magnet trough.
Preferably, the pressing plate that described two ends unshakable in one's determination are made by non-magnet material is fixed in rotating shaft, and pressing plate and the axial gapless of end face of iron core.
Preferably, it is motor for washer.
Preferably, the sectional area of described rotating shaft mating part is circular or square.
Preferably, described air magnet isolation tank is centered around the outside of rotating shaft, and length is greater than the half of permanent magnet trough length and is less than the total length of permanent magnet trough length, and the width of air magnet isolation tank is less than or equal to the width of permanent magnet trough, and air magnet isolation tank is preferably circular arc.
The beneficial effects of the utility model are:
The utility model utilizes air magnet isolation tank to be communicated with two adjacent permanent magnets groove, seals in air part, improves the magnetic resistance of leakage magnetic circuit, effectively can reduce leakage field in leakage field loop, improves permanent magnet utilance.
The bridge joint of the utility model rotating shaft mating part and pole parts limits leakage field without the need to plaing a part, and therefore desirable larger width is to ensure punching mechanical strength.
The pressing plate that the utility model two ends unshakable in one's determination are made by non-magnet material can limit permanent magnet axial displacement, is convenient to duplicate removal simultaneously and corrects dynamic balancing.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art one tangential p-m rotor.
Fig. 2 is the structural representation of the utility model one embodiment
Fig. 3 is the stereogram of the utility model one embodiment.
Fig. 4 is the structural representation of the another embodiment of the utility model.
1 iron core, 2 permanent magnet trough, 3 air magnet isolation tanks, 4 rotating shaft mating parts, 5 pole parts, 6 bridge joints, 7 rotating shafts, 8 pressing plates in figure.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
First embodiment
See Fig. 2, the utility model provides a kind of first embodiment of tangential permanent magnetic rotor, and it comprises iron core 1, a 2N permanent magnet trough 2, the permanent magnet being placed on corresponding permanent magnet trough 2, N number of air magnet isolation tank 3 of connection two adjacent permanent magnets groove 2 and the rotating shaft 7 through 1 center unshakable in one's determination.Along the radial uniform 2N permanent magnet trough 2 of 1 circumference unshakable in one's determination, in permanent magnet trough 2, lay 2N permanent magnet to form 2N rotor magnetic pole of alternating polarity according to the mode that same polarity is relative.The nearly air gap of permanent magnet trough 2 is one side closed, and nearly rotating shaft 7 side is connected with air magnet isolation tank 3, and each air magnet isolation tank 3 is circumferentially communicated with two adjacent permanent magnets groove 2.
Iron core is separated out the rotating shaft mating part 4 of a sub-circular by N number of air magnet isolation tank 3, and rotating shaft mating part 4 and pole parts 5 have N place bridge joint 6.
The pressing plate 8 that 1 two ends unshakable in one's determination are made by non-magnet material is fixed in rotating shaft 7, with 1 end face axial gapless unshakable in one's determination, as shown in Figure 3.
Shown in Fig. 1 against existing technologies, it is exactly numerically air magnet isolation tank 3 number that prior art is embodied in, bridge joint 6 place number equals rotor number of poles.The utility model compares prior art, and most significant difference is air magnet isolation tank 3 number, bridge joint 6 place number equals rotor pole logarithm, so just significantly can increase bridge joint 6 width, strengthen rotor mechanical intensity, effectively limit leakage field simultaneously.
Second embodiment
See Fig. 4, the utility model provides a kind of second embodiment of tangential permanent magnetic rotor, and itself and the main distinction of the first embodiment are that described air magnet isolation tank 3 is tangentially communicated with two adjacent permanent magnets groove 2, and its radial dimension strengthens.Iron core is separated out the rotating shaft mating part 4 of a squarish by N number of air magnet isolation tank 3, and bridge joint 6 size is widened.Other do not state part, with the first embodiment, no longer repeat.
Simultaneously, according to the tangential permanent magnetic rotor structure of above-described embodiment, the utility model also provides a kind of motor with tangential permanent magnetic rotor, namely tangential permanent magnetic rotor comprises unshakable in one's determination 1, along the radial uniform 2N permanent magnet trough 2 of 1 circumference unshakable in one's determination, be placed on corresponding permanent magnet trough 2 and form the permanent magnet of 2N rotor magnetic pole of alternating polarity, be communicated with N number of air magnet isolation tank 3 of two adjacent permanent magnets groove 2, and pass the rotating shaft 7 at 1 center unshakable in one's determination, the nearly air gap of wherein said permanent magnet trough 2 is one side closed, nearly rotating shaft 7 side is connected with air magnet isolation tank 3, and air magnet isolation tank 3 number equals rotor pole logarithm.Iron core 1 is separated out a rotating shaft mating part 4 and pole parts 5 by N number of air magnet isolation tank 3, and rotating shaft mating part 4 and pole parts 5 have N place bridge joint 6, and the number of this bridge joint 6 equals rotor pole logarithm.The pressing plate 8 that 1 two ends unshakable in one's determination are made by non-magnet material is fixed in rotating shaft 7, and pressing plate 8 and 1 end face axial gapless unshakable in one's determination.In the present embodiment, it is preferably washing machine permanent magnetic brushless.The sectional area of rotating shaft mating part 4 is preferably circular or square.
Although be described preferred embodiment of the present utility model by reference to the accompanying drawings above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; do not departing under the ambit that the utility model aim and claim protect, can also make a lot of form, these all belong within protection range of the present utility model.
Claims (8)
1. a tangential permanent magnetic rotor, it is characterized in that, along the radial uniform 2N permanent magnet trough (2) of (1) circumference unshakable in one's determination, the nearly air gap of permanent magnet trough (2) is one side closed, nearly rotating shaft (7) side is connected with air magnet isolation tank (3), and each air magnet isolation tank (3) is communicated with two adjacent permanent magnets groove (2), this air magnet isolation tank number equals rotor pole logarithm.
2. a kind of tangential permanent magnetic rotor according to claim 1, it is characterized in that, iron core (1) is separated out a rotating shaft mating part (4) by described N number of air magnet isolation tank (3), rotating shaft mating part (4) and pole parts (5) have N place bridge joint (6), and the number of this bridge joint equals rotor pole logarithm.
3. tangential permanent magnetic rotor according to claim 1, it is characterized in that, the pressing plate (8) that described iron core (1) two ends are made by non-magnet material is fixed in rotating shaft (7), with (1) end face axial gapless unshakable in one's determination.
4. one kind has the motor of tangential permanent magnetic rotor, it is characterized in that, described tangential permanent magnetic rotor comprises iron core (1), along the radial uniform 2N permanent magnet trough (2) of (1) circumference unshakable in one's determination, be placed on corresponding permanent magnet trough (2) and form the permanent magnet of 2N rotor magnetic pole of alternating polarity, be communicated with N number of air magnet isolation tank (3) of two adjacent permanent magnets groove (2), and pass the rotating shaft (7) at (1) center unshakable in one's determination, the nearly air gap of wherein said permanent magnet trough (2) is one side closed, nearly rotating shaft (7) side is connected with air magnet isolation tank (3), and air magnet isolation tank (3) number equals rotor pole logarithm.
5. motor according to claim 4, it is characterized in that, iron core (1) is separated out a rotating shaft mating part (4) and pole parts (5) by described N number of air magnet isolation tank (3), and rotating shaft mating part (4) and pole parts (5) have N place bridge joint (6), and the number of this bridge joint (6) equals rotor pole logarithm.
6. motor according to claim 4, it is characterized in that, the pressing plate (8) that described iron core (1) two ends are made by non-magnet material is fixed in rotating shaft (7), and pressing plate (8) and (1) end face axial gapless unshakable in one's determination.
7. motor according to claim 4, is characterized in that, it is motor for washer.
8. motor according to claim 5, is characterized in that, the sectional area of described rotating shaft mating part (4) is circular or square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420760080.6U CN204258475U (en) | 2014-12-05 | 2014-12-05 | Tangential permanent magnetic rotor and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420760080.6U CN204258475U (en) | 2014-12-05 | 2014-12-05 | Tangential permanent magnetic rotor and motor |
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| Publication Number | Publication Date |
|---|---|
| CN204258475U true CN204258475U (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420760080.6U Active CN204258475U (en) | 2014-12-05 | 2014-12-05 | Tangential permanent magnetic rotor and motor |
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| CN (1) | CN204258475U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105720716A (en) * | 2014-12-05 | 2016-06-29 | 莱克电气股份有限公司 | Tangential permanent magnetic rotor and motor |
| CN105958684A (en) * | 2016-07-01 | 2016-09-21 | 中车株洲电力机车研究所有限公司 | Built-in permanent magnet motor and rotor thereof |
| CN112713741A (en) * | 2020-12-21 | 2021-04-27 | 中车永济电机有限公司 | Self-starting three-phase synchronous reluctance motor |
-
2014
- 2014-12-05 CN CN201420760080.6U patent/CN204258475U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105720716A (en) * | 2014-12-05 | 2016-06-29 | 莱克电气股份有限公司 | Tangential permanent magnetic rotor and motor |
| CN105958684A (en) * | 2016-07-01 | 2016-09-21 | 中车株洲电力机车研究所有限公司 | Built-in permanent magnet motor and rotor thereof |
| CN112713741A (en) * | 2020-12-21 | 2021-04-27 | 中车永济电机有限公司 | Self-starting three-phase synchronous reluctance motor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |