CN204615532U - A kind of outer-rotor structure of motor and the external rotor electric machine of application thereof - Google Patents
A kind of outer-rotor structure of motor and the external rotor electric machine of application thereof Download PDFInfo
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- CN204615532U CN204615532U CN201520271835.0U CN201520271835U CN204615532U CN 204615532 U CN204615532 U CN 204615532U CN 201520271835 U CN201520271835 U CN 201520271835U CN 204615532 U CN204615532 U CN 204615532U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/30—Reducing waste in manufacturing processes; Calculations of released waste quantities
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Abstract
The utility model discloses a kind of outer-rotor structure of motor and the external rotor electric machine of application thereof, the outer-rotor structure of wherein said motor comprises rotor case and several permanent magnets, the cavity for holding stator is formed in the middle of rotor case, several permanent magnet circumference compartment of terrains are arranged on the internal face of rotor case, rotor case comprises some pieces of magnetic conductive boards and casting connector, some pieces of magnetic conductive board circumferences are spaced, casting connector connects to one some pieces of magnetic conductive boards and makes the internal face of every block magnetic conductive board exposed, raw-material wasting phenomenon can be reduced to the full extent, and production technology, Standard is more simple, the weight of complete machine is less, be beneficial to and improve its operational efficiency.
Description
Technical field:
The utility model relates to a kind of outer-rotor structure of motor and the external rotor electric machine of application thereof, belongs to technical field of motors.
Background technology:
As shown in Figure 1, for the existing outer-rotor structure be used in motor, the wall thickness of rotor case A requires relatively high, usually requires that the wall thickness of rotor case A is between 5.0mm-10.0mm, therefore the difficulty for punching stretch steel plate is relatively large, it is also proposed strict requirement to equipment.In the rotor case of one drawing and forming, really to the part being only secured at the permanent magnet covering on rotor case internal face that magnetic circuit works, other parts can only play the effect of reinforced structure, but the steel plate of 5.0mm-10.0mm is as reinforced structure, obvious design is excessive, but shortcoming way removes the excessive steel plate of design.
The mounting flange be simultaneously sleeved on outside rotor case adopts the steel plate punched of monoblock shaping, and the utilance of steel plate is very low, and the phenomenon wasted raw material is very serious.After mounting flange is sleeved on the outside of rotor case, both total weights are very large, and electric efficiency is low, is difficult to the demand of catering to existing market, will be eliminated gradually.
Summary of the invention:
The purpose of this utility model is to provide a kind of outer-rotor structure of motor and the external rotor electric machine of application thereof, by casting connector some pieces of magnetic conductive boards are connected to and be integrally formed external rotor, raw-material wasting phenomenon can be reduced to the full extent, and production technology, Standard are more simple, the weight of complete machine is less, is beneficial to and improves its operational efficiency.
The purpose of this utility model is achieved by following technical proposals.
A kind of outer-rotor structure of motor, comprise rotor case and several permanent magnets, the cavity for holding stator is formed in the middle of rotor case, several permanent magnet circumference compartment of terrains are arranged on the internal face of rotor case, rotor case comprises some pieces of magnetic conductive boards and casting connector, some pieces of magnetic conductive board circumferences are spaced, and casting connector connects to one some pieces of magnetic conductive boards and makes the internal face of every block magnetic conductive board exposed.
Described above is formed with gap between adjacent two pieces of magnetic conductive boards, and molding part connector is filled in inside gap.
The size in gap described above is between 1.0mm-3.0mm.
Described above pasting on the internal face of rotor case is provided with several permanent magnets, the intersection be centrally located between adjacent two pieces of magnetic conductive boards of each permanent magnet.
Casting connector described above the surrounding of every block magnetic conductive board is wrapped in and make the internal face of every block magnetic conductive board and outside wall surface exposed.
Magnetic conductive board described above is stamping forming by iron plate and with certain radian.
Described above is provided with mounting flange outside described casting connector, and mounting flange and described casting connector are that integrally casting is shaping.
Diapire at cavity described above, casting connector offer through hole, and outside through hole, on the diapire of cavity, circumference is provided with some reinforcements.
A kind of external rotor electric machine, comprise stator, external rotor and rotating shaft, wherein stator comprises stator core, overhang insulation, coil windings and plastic-sealed body, overhang insulation is arranged on the end face of stator core, coil windings is winding and installed on overhang insulation, plastic-sealed body is described stator core, overhang insulation and coil windings connect to one, external rotor is sheathed on outside stator, receiver is provided with in the middle of external rotor, receiver extend in the middle of stator, receiver two ends are provided with bearing chamber, inside bearing chamber, bearing is installed, rotating shaft to be positioned at inside receiver and two supports on bearing, pillar is stretched out in the middle of the end face of plastic-sealed body, axis hole is offered in the middle of pillar, rotating shaft is nested in inside axis hole, wherein external rotor comprises rotor case and several permanent magnets, the cavity for holding stator is formed in the middle of rotor case, several permanent magnet circumference compartment of terrains are arranged on the internal face of rotor case, rotor case comprises some pieces of magnetic conductive boards and casting connector, some pieces of magnetic conductive board circumferences are spaced, casting connector connects to one some pieces of magnetic conductive boards and makes the internal face of every block magnetic conductive board exposed.
The utility model compared with prior art, has following effect:
1) rotor case comprises some pieces of magnetic conductive boards and casting connector, some pieces of magnetic conductive board circumferences are spaced, casting connector connects to one some pieces of magnetic conductive boards and makes the internal face of every block magnetic conductive board exposed, the internal face of every block magnetic conductive board is exposed is ensure that the magnetic circuit be arranged between the permanent magnet on rotor case internal face is unaffected, thus under the prerequisite ensureing rotor case performance, raw-material wasting phenomenon can be reduced to the full extent, and production technology, Standard are more simple, the weight of complete machine is less, is beneficial to and improves its operational efficiency.
2) between adjacent two pieces of magnetic conductive boards, gap is formed with, molding part connector is filled in inside gap, the size in gap between 1.0mm-3.0mm, save raw-material while, ensure the bonding strength of adjacent two pieces of magnetic conductive boards, ensure stable, the reliability service of external rotor.
3) on the internal face of rotor case, stickup is provided with several permanent magnets, the intersection be centrally located between adjacent two pieces of magnetic conductive boards of each permanent magnet, ensures that the magnetic circuit between permanent magnet is unaffected, ensures motor stabilizing, reliability service.
4) cast connector the surrounding of every block magnetic conductive board is wrapped in and make the internal face of every block magnetic conductive board and outside wall surface exposed, under the prerequisite ensureing casting connector and magnetic conductive board, bonding strength between magnetic conductive board and magnetic conductive board, exposed for the outside wall surface of magnetic conductive board, raw material can be saved further, reduce the weight of complete machine, be beneficial to the operational efficiency improving external rotor electric machine.
5) outside described casting connector, mounting flange is provided with, mounting flange and described casting connector are that integrally casting is shaping, structure is simple, compared to the existing mounting flange shaping by the steel plate punched of monoblock, the mounting flange of this structure can save a large amount of raw material, and production technology is more simple, and whole rotor case has higher structural strength.
Accompanying drawing illustrates:
Fig. 1 is the stereogram of existing outer-rotor structure;
Fig. 2 is the stereogram one of outer-rotor structure in embodiment;
Fig. 3 is the stereogram two of outer-rotor structure in embodiment;
Fig. 4 is the front view of outer-rotor structure in embodiment;
Fig. 5 is A-A cutaway view in Fig. 4;
Fig. 6 is the stereogram of external rotor electric machine in embodiment;
Fig. 7 is the structural representation of external rotor electric machine in embodiment.
Embodiment:
Also by reference to the accompanying drawings the utility model is described in further detail below by specific embodiment.
Embodiment one: as Fig. 2, Fig. 3, shown in Fig. 4 and Fig. 5, the utility model is a kind of outer-rotor structure of motor, comprise rotor case 1 and several permanent magnets 2, the cavity 10 for holding stator is formed in the middle of rotor case 1, several circumferential compartment of terrains of permanent magnet 2 are arranged on the internal face of rotor case 1, rotor case 1 comprises some pieces of magnetic conductive boards 11 and casting connector 12, magnetic conductive board 11 is stamping forming by iron plate and with certain radian, the some pieces of evenly distributed placements in the circumferential interval of magnetic conductive board 11 in a mold, the aluminium of high-temperature liquid state is poured afterwards in mould, namely some casting connectors 12 are formed after the aluminium cooling of high-temperature liquid state, casting connector 12 connects to one some pieces of magnetic conductive boards 11 and makes the internal face of every block magnetic conductive board 11 exposed, the internal face of every block magnetic conductive board 11 is exposed is ensure that the magnetic circuit be arranged between the permanent magnet 2 on rotor case 1 internal face is unaffected, thus under the prerequisite ensureing rotor case 1 performance, raw-material wasting phenomenon can be reduced to the full extent, and production technology, Standard is more simple, the weight of complete machine is less, be beneficial to and improve its operational efficiency.
Between adjacent two pieces of magnetic conductive boards 11, be formed with gap 110, molding part connector 12 is filled in inside gap 110.The size in described gap 110 is between 1.0mm-3.0mm.Saving raw-material while, ensure the bonding strength of adjacent two pieces of magnetic conductive boards 11, ensure stable, the reliability service of external rotor.
The internal face of rotor case 1 is pasted and several permanent magnets 2 is installed, the intersection be centrally located between adjacent two pieces of magnetic conductive boards 11 of each permanent magnet 2.Ensure that the magnetic circuit between permanent magnet 2 is unaffected, ensure motor stabilizing, reliability service
Casting connector 12 surrounding of every block magnetic conductive board 11 is wrapped in and make the internal face of every block magnetic conductive board 11 and outside wall surface exposed.Under the prerequisite ensureing casting connector 12 and magnetic conductive board 11, bonding strength between magnetic conductive board 11 and magnetic conductive board 11, exposed for the outside wall surface of magnetic conductive board 11, raw material can be saved further, reduce the weight of complete machine, be beneficial to the operational efficiency improving external rotor electric machine.
Outside described casting connector 12, be provided with mounting flange 3, mounting flange 3 and described casting connector 12 are that integrally casting is shaping.
The rotor case of existing employing monoblock steel plate punched drawing and forming is taken charge of for me, the material net weight 3.4kg that rotor case needs, the material net weight 1.34kg that mounting flange needs, material gross dry weight is 4.74kg, by the market price 4000 yuan/ton of current steel, raw-material price is 4.74
*4=18.96 unit, finally makes the rotor case gross weight 3.9kg with mounting flange.
When adopting the external rotor of the utility model structure, the material net weight that punching press iron plate needs is 0.134
*10=1.34kg, the material net weight that casting connector needs is 0.7kg, and by the market price 4000 yuan/ton of current iron, 12000 yuan/ton, aluminium, raw-material price is 1.34
*4+0.7
*12=13.88 unit, finally makes the rotor case gross weight 2kg with mounting flange.
As can be seen here, outer-rotor structure of the present utility model, price and weight have very large competitive advantage.The diapire, casting connector 12 of cavity 10 offer through hole 121, through hole 121 is for installation shaft bearing, outside through hole 121, on the diapire of cavity 10, circumference is provided with some reinforcements 122, and reinforcement 122 is for the structural strength of the connector 12 that ensures to cast.
Embodiment two: as shown in Figures 2 to 7, the utility model is a kind of external rotor electric machine, comprise stator 4, external rotor 5 and rotating shaft 6, wherein stator 4 comprises stator core 41, overhang insulation 42, coil windings 43 and plastic-sealed body 44, overhang insulation 42 is arranged on the end face of stator core 41, coil windings 43 is winding and installed on overhang insulation 42, plastic-sealed body 44 is described stator core 41, overhang insulation 42 and coil windings 43 connect to one, external rotor 5 is sheathed on outside stator 4, receiver 7 is provided with in the middle of external rotor 5, receiver 7 extend in the middle of stator 4, receiver 7 two ends are provided with bearing chamber 71, bearing 8 is installed inside bearing chamber 71, rotating shaft 6 to be positioned at inside receiver 7 and two supports on bearing 8, pillar 441 is stretched out in the middle of the end face of plastic-sealed body 44, axis hole 4410 is offered in the middle of pillar 441, rotating shaft 6 is nested in inside axis hole 4410, wherein external rotor 5 comprises rotor case 1 and several permanent magnets 2, the cavity 10 for holding stator is formed in the middle of rotor case 1, several circumferential compartment of terrains of permanent magnet 2 are arranged on the internal face of rotor case 1, rotor case 1 comprises some pieces of magnetic conductive boards 11 and casting connector 12, some pieces of magnetic conductive board 11 circumferences are spaced, casting connector 12 connects to one some pieces of magnetic conductive boards 11 and makes the internal face of every block magnetic conductive board 11 exposed.
Above embodiment is better embodiment of the present invention; but embodiments of the present invention are not limited thereto; other are any do not deviate from Spirit Essence of the present invention and principle under do change, modification, substitute, combine, simplify; be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (9)
1. the outer-rotor structure of a motor, comprise rotor case (1) and several permanent magnets (2), the cavity (10) for holding stator is formed in the middle of rotor case (1), several permanent magnets (2) circumferential compartment of terrain is arranged on the internal face of rotor case (1), it is characterized in that: rotor case (1) comprises some pieces of magnetic conductive boards (11) and casting connector (12), some pieces of magnetic conductive board (11) circumferences are spaced, casting connector (12) connects to one some pieces of magnetic conductive boards (11) and makes the internal face of every block magnetic conductive board (11) exposed.
2. the outer-rotor structure of a kind of motor according to claim 1, it is characterized in that: between adjacent two pieces of magnetic conductive boards (11), be formed with gap (110), molding part connector (12) is filled in the inside, gap (110).
3. the outer-rotor structure of a kind of motor according to claim 2, is characterized in that: the size of described gap (110) is between 1.0mm-3.0mm.
4. the outer-rotor structure of a kind of motor according to claim 1 or 2 or 3, it is characterized in that: paste on the internal face of rotor case (1) and several permanent magnets (2) are installed, the intersection be centrally located between adjacent two pieces of magnetic conductive boards (11) of each permanent magnet (2).
5. the outer-rotor structure of a kind of motor according to claim 4, is characterized in that: casting connector (12) surrounding of every block magnetic conductive board (11) is wrapped in and make the internal face of every block magnetic conductive board (11) and outside wall surface exposed.
6. the outer-rotor structure of a kind of motor according to claim 1 or 2 or 3, is characterized in that: described magnetic conductive board (11) is stamping forming by iron plate and with certain radian.
7. the outer-rotor structure of a kind of motor according to claim 1 or 2 or 3, it is characterized in that: described casting connector (12) outside is provided with mounting flange (3), and mounting flange (3) and described casting connector (12) are that integrally casting is shaping.
8. the outer-rotor structure of a kind of motor according to claim 1 or 2 or 3, it is characterized in that: the diapire in cavity (10), casting connector (12) offer through hole (121), on the diapire of through hole (121) outside, cavity (10), circumference is provided with some reinforcements (122).
9. an external rotor electric machine, comprise stator (4), external rotor (5) and rotating shaft (6), wherein stator (4) comprises stator core (41), overhang insulation (42), coil windings (43) and plastic-sealed body (44), overhang insulation (42) is arranged on the end face of stator core (41), coil windings (43) is winding and installed on overhang insulation (42), plastic-sealed body (44) is described stator core (41), overhang insulation (42) and coil windings (43) connect to one, external rotor (5) is sheathed on stator (4) outside, receiver (7) is provided with in the middle of external rotor (5), receiver (7) extend in the middle of stator (4), receiver (7) two ends are provided with bearing chamber (71), bearing (8) is installed in bearing chamber (71) the inside, rotating shaft (6) be positioned at receiver (7) the inside and two supports on bearing (8), pillar (441) is stretched out in the middle of the end face of plastic-sealed body (44), axis hole (4410) is offered in the middle of pillar (441), rotating shaft (6) is nested in axis hole (4410) the inside, wherein external rotor (5) comprises rotor case (1) and several permanent magnets (2), the cavity (10) for holding stator is formed in the middle of rotor case (1), several permanent magnets (2) circumferential compartment of terrain is arranged on the internal face of rotor case (1), it is characterized in that: rotor case (1) comprises some pieces of magnetic conductive boards (11) and casting connector (12), some pieces of magnetic conductive board (11) circumferences are spaced, casting connector (12) connects to one some pieces of magnetic conductive boards (11) and makes the internal face of every block magnetic conductive board (11) exposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520271835.0U CN204615532U (en) | 2015-04-30 | 2015-04-30 | A kind of outer-rotor structure of motor and the external rotor electric machine of application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520271835.0U CN204615532U (en) | 2015-04-30 | 2015-04-30 | A kind of outer-rotor structure of motor and the external rotor electric machine of application thereof |
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| Publication Number | Publication Date |
|---|---|
| CN204615532U true CN204615532U (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520271835.0U Active CN204615532U (en) | 2015-04-30 | 2015-04-30 | A kind of outer-rotor structure of motor and the external rotor electric machine of application thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105703507A (en) * | 2016-03-22 | 2016-06-22 | 迪百仕电机科技（苏州）有限公司 | Rotor of permanent magnet outer rotor motor |
| WO2017193513A1 (en) * | 2016-05-09 | 2017-11-16 | 中山大洋电机股份有限公司 | Outer-rotor motor provided with extending dual shafts, and fan using same |
| CN109888959A (en) * | 2019-03-19 | 2019-06-14 | 苏州欧比特机械有限公司 | A kind of outer-rotor structure of outer-rotor permanent magnet motor |
-
2015
- 2015-04-30 CN CN201520271835.0U patent/CN204615532U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105703507A (en) * | 2016-03-22 | 2016-06-22 | 迪百仕电机科技（苏州）有限公司 | Rotor of permanent magnet outer rotor motor |
| WO2017193513A1 (en) * | 2016-05-09 | 2017-11-16 | 中山大洋电机股份有限公司 | Outer-rotor motor provided with extending dual shafts, and fan using same |
| CN109888959A (en) * | 2019-03-19 | 2019-06-14 | 苏州欧比特机械有限公司 | A kind of outer-rotor structure of outer-rotor permanent magnet motor |
| CN109888959B (en) * | 2019-03-19 | 2024-05-28 | 苏州欧比特机械有限公司 | Outer rotor structure of outer rotor permanent magnet motor |
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