CN205544669U - Adopt brushless motor of magnetic ring formula sintered nd -Fe -B rotor - Google Patents
Adopt brushless motor of magnetic ring formula sintered nd -Fe -B rotor Download PDFInfo
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- CN205544669U CN205544669U CN201620060374.7U CN201620060374U CN205544669U CN 205544669 U CN205544669 U CN 205544669U CN 201620060374 U CN201620060374 U CN 201620060374U CN 205544669 U CN205544669 U CN 205544669U
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Abstract
The utility model provides an adopt brushless motor of magnetic ring formula sintered nd -Fe -B rotor, belongs to electrical equipment assembly technical field, including casing, rotor subtotal stator part, the rotor part is including sintered nd -Fe -B magnetic ring, rotor chip and pivot, rotor chip and pivot crimp connection, sintered nd -Fe -B magnetic ring medial surface and rotor chip lateral surface fixed connection, the design has the recess that is axial evenly distributed more than 3 in the sintered nd -Fe -B magnetic ring, the peripheral design of rotor chip has the arch that is axial evenly distributed more than 3, the quantity and the bellied quantity of recess equal that per 1 recess and 1 arch correspond the setting, form 1 recess and bellied cooperation structure, form 3 altogether with upper groove and bellied cooperation structure. The beneficial effects of the utility model are that: release force control after the magnetic shoe bonds is good, efficient during batch production, product rotor surfaces beats for a short time, the amount of unbalance of rotor is little, be fit for the rotor diameter big, fold thick long motor.
Description
Technical field
The present invention is a kind of brushless electric machine, particularly to a kind of brushless electric machine using magnet ring type sintered NdFeB rotor, belongs to motor device mounting technology field.
Background technology
It is known that in permanent-magnet brushless DC electric machine, main magnet typically has following three kinds: 1. ferrite magnetic shoe, is generally used for low cost, in low performance product；2. Agglutinate neodymium-iron-boron magnet ring, is mainly used for middle level products；3. sintered NdFeB magnetic shoe, is mainly used for high cost, high-performance, the product of high request.The selection of main magnet is vital in motor, and it affects whole cost and the performance of motor, different clients, and different products is for the selection of different main magnets.If Fig. 1-1 is to shown in 3-2.The brushless electric machine of above-mentioned routine mainly uses for electric tool class, customer requirement motor high torque, high-power could meet client and use requirement, its deisgn product use 4 pole 6 groove structures designs, as shown in Fig. 2-1, first by axle with in hydraulic press press-in chip, then by 4 sintered NdFeB magnetic shoes with on anaerobic adhesive fixed chip, magnetic shoe uses unique " C " type design, and chip coordinates the design of magnetic shoe, magnetic shoe is fixed on tape spool iron core, the advantage that this design also has its uniqueness:
1. surface-mount type sintered NdFeB magnetic shoe design structure, make use of the advantage of the high remanent magnetism of sintered NdFeB Magnet more fully, thus reaches the high performance requirement of motor；
2. " C " type structure design of uniqueness, it is to avoid because of at a high speed, the motor failure that the adverse circumstances such as high vibrations cause；
3. product compares embedded rotor design, embodies high-performance, the innovative design of low cost, is suitable for high rotating speed, high-performance, and high-power grade in instrument uses；
4. comparing sintering magnetic Nd-Fe-B ring structure, magnetic shoe design greatly reduces product cost；
But this design structure also has the shortcoming of many, as follows:
1. monolithic magnetic shoe is less with the area that chip is fitted, and the release power after magnetic tile bonding controls bad；
2. design due to magnetic shoe structure, fixing magnetic shoe in view of with chip structure, magnetic shoe design is that pole embrace typically takes 0.75, easily produces reverse magnetic in magnetic shoe and the excessive position of magnetic shoe after magnetizing, thus affect the performance of magnetic shoe maximum performance, finally affect performance and the efficiency of motor；
3. 4 magnetic shoe structure designs, greatly reduce efficiency during batch production, if being designed as 6 poles or 8 poles, that brings significantly inconvenience to production undoubtedly；
4. product rotor surface is beated greatly, and mainly 4 magnetic shoes can not accomplish striking resemblances, and also cannot ensure consistent during fixing magnetic shoe；
5. the amount of unbalance of rotor is big, and it is big that this design is not suitable for rotor diameter, the motor that folded thickness is long.
Summary of the invention
It is an object of the invention in the prior art of the brushless electric machine for above-mentioned routine, there is the release power after magnetic tile bonding and control bad, easily produce the performance of reverse effect of magnetic influence motor in magnetic shoe and the excessive position of magnetic shoe after magnetizing, efficiency during batch production is low, product rotor surface is beated greatly, the motor that the amount of unbalance of rotor is big, it is big to be not suitable for rotor diameter, folded thickness is long；Provide a kind of brushless electric machine using magnet ring type sintered NdFeB rotor, the release power after magnetic tile bonding that can reach is controlled well, do not produce the performance of reverse effect of magnetic influence motor in magnetic shoe and the excessive position of magnetic shoe after magnetizing, efficiency during batch production is high, product rotor surface is beated little, and the amount of unbalance of rotor is little, it is big to be suitable for rotor diameter, fold the purpose of the long motor of thickness.
The present invention adopts the technical scheme that to achieve these goals: a kind of brushless electric machine using magnet ring type sintered NdFeB rotor, including housing, rotor portion and stationary part, described rotor portion is arranged in stationary part, and described rotor portion and stationary part are arranged in housing；Described rotor portion includes main magnet, rotor chip and rotating shaft, and described rotor chip is arranged on outside rotating shaft, and rotor chip is connected with rotating shaft crimping；
Described main magnet is sintering magnetic Nd-Fe-B ring, and sintering magnetic Nd-Fe-B ring is located at outside rotor core sheet, and sintering magnetic Nd-Fe-B ring medial surface is fixing with rotor core sheet lateral surface to be connected；Be designed with in described sintering magnetic Nd-Fe-B ring more than 3 in axial equally distributed groove, described rotor chip periphery is designed with more than 3 in axial equally distributed projection, the quantity of described groove is equal with protruding quantity, every 1 groove and 1 projection are correspondingly arranged, form 1 groove and the fit structure of projection, and composition 3 is with upper groove and protruding fit structure altogether.
Be designed with in described magnet ring 4 in axial equally distributed groove, rotor chip periphery be designed with 4 in the most equally distributed projection, 4 grooves of composition and protruding fit structure altogether.
Described, sintering magnetic Nd-Fe-B ring medial surface is connected so that anaerobic adhesive is fixing with rotor core sheet lateral surface.
Compared with prior art, the beneficial effects of the utility model are:
1. coordinating area big between magnet ring with chip, after bonding, magnet ring release power is more much larger than magnetic shoe structure；
2. the structure design of magnet ring solves because of the reversed polarity occurred that magnetizes, thus substantially increases performance and the efficiency of product；
3. magnet ring structure technique is simple, is suitable for batch production, substantially increases production efficiency；
4. solving rotor to beat big problem, magnet ring surface run_out more preferably controls relative to magnetic shoe, depends primarily on the precision of magnet ring itself and assembling jig；
5. rotor unbalance value is little, sufficiently make use of the performance of ndfeb magnet, changes into Motor torque and power, is suitable for the motor that rotor diameter is big and the folded thickness of chip is long.
Accompanying drawing explanation
Fig. 1-1 is: conventional brushless electric machine sintered NdFeB magnetic shoe front view；
Fig. 1-2 is: conventional brushless electric machine sintered NdFeB magnetic shoe left view；
Fig. 2-1 is: conventional brushless electric motor rotor front view；
Fig. 2-2 is: conventional brushless electric motor rotor left view；
Fig. 3-1 is: conventional brushless electric machine front view；
Fig. 3-2 is: conventional brushless electric machine left view；
Fig. 4-1 is: brushless electric machine sintering magnetic Nd-Fe-B ring front view of the present invention；
Fig. 4-2 is: brushless electric machine sintering magnetic Nd-Fe-B ring left view of the present invention；
Fig. 5-1 is: brushless electric motor rotor front view of the present invention；
Fig. 5-2 is: brushless electric motor rotor left view of the present invention；
Fig. 6-1 is: brushless electric machine front view of the present invention；
Fig. 6-2 is: brushless electric machine left view of the present invention.
Description of reference numerals: housing 1, sintering magnetic Nd-Fe-B ring 2, rotor chip 3, rotating shaft 4, rotor portion 5, stationary part 6, groove 7, projection 8.
Detailed description of the invention
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, but not as a limitation of the invention.
As Fig. 4-1 is to shown in Fig. 6-2, and a kind of brushless electric machine using magnet ring type sintered NdFeB rotor, including housing 1, rotor portion 5 and stationary part 6, described rotor portion 5 is arranged in stationary part 6, and described rotor portion 5 and stationary part 6 are arranged in housing 1；Described rotor portion 5 includes that sintering magnetic Nd-Fe-B ring 2, rotor chip 3 and rotating shaft 4, described rotor chip 3 are arranged on outside rotating shaft 4, and rotor chip 3 is connected with rotating shaft 4 crimping；
Described sintering magnetic Nd-Fe-B ring 2 is located at outside rotor chip 3, and sintering magnetic Nd-Fe-B ring 2 medial surface is connected so that anaerobic adhesive is fixing with rotor chip 3 lateral surface；4 it are designed with in axial equally distributed groove 7 in described magnet ring 2, rotor chip 3 periphery design has 4 in axial equally distributed protruding 8, the quantity of described groove 7 is equal with the quantity of protruding 8, every 1 groove 7 and 1 projection 8 are correspondingly arranged, form 1 groove 7 and the fit structure of protruding 8, altogether 4 grooves of composition 7 and the fit structure of protruding 8.
Embodiment described above, the simply one of the present invention more preferably detailed description of the invention, the usual variations and alternatives that those skilled in the art is carried out in the range of technical solution of the present invention all should comprise within the scope of the present invention.
Claims (3)
1. use a brushless electric machine for magnet ring type sintered NdFeB rotor, including housing, rotor portion and stationary part, described turn
Subdivision is arranged in stationary part, and described rotor portion and stationary part are arranged in housing；Described rotor portion includes main
Magnet, rotor chip and rotating shaft, described rotor chip is arranged on outside rotating shaft, and rotor chip is connected with rotating shaft crimping, its feature
It is:
Described main magnet is sintering magnetic Nd-Fe-B ring, and sintering magnetic Nd-Fe-B ring is located at outside rotor core sheet, in sintering magnetic Nd-Fe-B ring
Side is fixing with rotor core sheet lateral surface to be connected；Be designed with in described sintering magnetic Nd-Fe-B ring more than 3 in being axially uniformly distributed
Groove, described rotor chip periphery be designed with more than 3 in axial equally distributed projection, the quantity of described groove is with protruding
Quantity equal, every 1 groove and 1 projection are correspondingly arranged, form 1 groove and the fit structure of projection, form 3 altogether
Individual with upper groove with protruding fit structure.
A kind of brushless electric machine using magnet ring type sintered NdFeB rotor the most according to claim 1, it is characterised in that: described magnetic
Be designed with in ring 4 in axial equally distributed groove, rotor chip periphery be designed with 4 in the most equally distributed projection,
4 grooves of composition and protruding fit structure altogether.
A kind of brushless electric machine using magnet ring type sintered NdFeB rotor the most according to claim 1, it is characterised in that: described burning
Knot magnetic Nd-Fe-B ring medial surface is connected so that anaerobic adhesive is fixing with rotor core sheet lateral surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620060374.7U CN205544669U (en) | 2016-01-20 | 2016-01-20 | Adopt brushless motor of magnetic ring formula sintered nd -Fe -B rotor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620060374.7U CN205544669U (en) | 2016-01-20 | 2016-01-20 | Adopt brushless motor of magnetic ring formula sintered nd -Fe -B rotor |
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| CN205544669U true CN205544669U (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620060374.7U Active CN205544669U (en) | 2016-01-20 | 2016-01-20 | Adopt brushless motor of magnetic ring formula sintered nd -Fe -B rotor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947411A (en) * | 2017-12-21 | 2018-04-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor structure and the motor for including it |
| CN109887703A (en) * | 2018-12-04 | 2019-06-14 | 杭州史宾纳科技有限公司 | A kind of neodymium iron boron orientation device of square wave magnet ring |
| CN114977576A (en) * | 2022-05-16 | 2022-08-30 | 南通和力磁材有限公司 | Inner rotor mechanism of neodymium iron boron magnet ring bonded outside magnet ring |
-
2016
- 2016-01-20 CN CN201620060374.7U patent/CN205544669U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947411A (en) * | 2017-12-21 | 2018-04-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor structure and the motor for including it |
| CN107947411B (en) * | 2017-12-21 | 2024-06-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor structure and motor comprising same |
| CN109887703A (en) * | 2018-12-04 | 2019-06-14 | 杭州史宾纳科技有限公司 | A kind of neodymium iron boron orientation device of square wave magnet ring |
| CN109887703B (en) * | 2018-12-04 | 2023-08-15 | 杭州史宾纳科技有限公司 | NdFeB (neodymium iron boron) orientation device of square wave magnetic ring |
| CN114977576A (en) * | 2022-05-16 | 2022-08-30 | 南通和力磁材有限公司 | Inner rotor mechanism of neodymium iron boron magnet ring bonded outside magnet ring |
| CN114977576B (en) * | 2022-05-16 | 2023-10-13 | 南通和力磁材有限公司 | Inner rotor mechanism with magnetic ring sleeved with bonded neodymium-iron-boron magnetic ring |
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