CN202949342U - Outer rotor type brushless direct current motor - Google Patents
Outer rotor type brushless direct current motor Download PDFInfo
- Publication number
- CN202949342U CN202949342U CN2012206637700U CN201220663770U CN202949342U CN 202949342 U CN202949342 U CN 202949342U CN 2012206637700 U CN2012206637700 U CN 2012206637700U CN 201220663770 U CN201220663770 U CN 201220663770U CN 202949342 U CN202949342 U CN 202949342U
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- stator
- magnetic shoe
- insulation frame
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Abstract
The utility model provides an outer rotor type brushless direct current motor which comprises a stator, a rotor and a Hall sensor. The stator comprises a stator iron core, a first slot insulation frame, a second slot insulation frame and a coil winding, the first slot insulation frame and the second slot insulation frame are respectively installed on two sides of the stator iron core, and the coil winding is wound on the first slot insulation frame and the second slot insulation frame. The rotor comprises a casing, a plurality of magnetic shoes packaged in the casing in plastic mode, a rotor iron core and a spline insert. The Hall sensor is installed on a Hall support which is fixedly connected with a Hall support fixing insert block through a connecting member, and the Hall support fixing insert block is embedded on a positioning groove of the first slot insulation frame or the second slot insulation frame and molded with the rotor in plastic packaging mode. The magnetic shoes are parallelogram-shaped chute magnetic shoes, and the inner surfaces and the end faces of the magnetic shoes are magnetized. Compared with a traditional square magnetic shoe, the outer rotor type brushless direct current motor is stable in operation and low in noise.
Description
Technical field
The utility model belongs to the washing machine field, is specifically related to a kind of external-rotor-type brshless DC motor for driving full-automatic pulsator washing machine.
Background technology
Present stage, although various alternating current motor and DC motor are occupied an leading position in transmission application, brushless DC motor is just receiving general concern.Since the nineties in 20th century, development along with the raising of people's living standard and modern production, office automation, the equipment such as household electrical appliance, industrial robot all more and more trends towards high efficiency, miniaturization and high-intelligentization, important component part as executive component, motor must have that precision is high, speed is fast, the efficient high, and therefore the application of brshless DC motor also increases rapidly.Especially in energy-conservation today that has become themes of the times, the high efficiency characteristics of brshless DC motor have more shown the using value that it is huge.
Brushless DC motor rotor adopts permanent magnet, and the air-gap flux of its generation remains normal value, thereby is specially adapted to permanent torque operation; For output-constant operation, although can not directly changing magnetic flux, brshless DC motor realizes weak magnetic control system, also can obtain the effect of weak magnetic control system by the improvement of control method.High due to the coercive force of rare earth permanent-magnetic material, remanent magnetism is large, can produce very large air-gap flux, can greatly dwindle rotor radius like this, subtract trochantinian moment of inertia, thereby in the servo drive system that requires good static characteristic and high dynamic response, in using as Digit Control Machine Tool, robot etc., brshless DC motor has shown more superiority than AC servo motor and DC servo motor.The range of application of brshless DC motor has spreaded all over the every field of national economy at present, and increasingly extensive, is particularly widely applied in fields such as household electrical appliance, electric automobile, Aero-Space.
At present, begun to be widely used brshless DC motor as drive unit in drum-type or impeller type washing machine field.But, traditional brshless DC motor many defectives such as noise is large, operational vibration is large are arranged.
The utility model content
The utility model provides a kind of external-rotor-type brshless DC motor that can reduce noise, stable working for above-mentioned the deficiencies in the prior art.
The utility model is achieved by the following technical solution:
A kind of external-rotor-type brshless DC motor comprises stator, rotor and Hall element;
Described stator comprises stator core, First Line slot liner frame, the second wire casing insulating frame and coil windings, First Line slot liner frame and the second wire casing insulating frame are arranged on respectively the both sides of stator core, and coil windings is around the home on First Line slot liner frame and the second wire casing insulating frame;
Described rotor comprises housing, and a plurality of magnetic shoes, rotor core and the spline inserts of plastic packaging in housing, and magnetic shoe is inhaled the inner ring at iron core, and magnetic shoe is gapped each other; The spline inserts is arranged at the center of housing;
Described Hall element is arranged on Hall support, Hall support and Hall support fixedly abaculus are fixedly connected with by a connection piece, Hall support fixedly abaculus is embedded on the location notch of First Line slot liner frame or the second wire casing insulating frame, and with the moulding of stator plastic packaging;
It is characterized in that, described magnetic shoe is the skewed slot magnetic shoe of parallelogram, and inner surface and the end face of magnetic shoe magnetize.
Of the present utility modelly preferably be set to, establish a plurality of fan-shaped holes and many T shape reinforcements on described housing.
Of the present utility modelly preferably be set to, described stator core is combined by several split silicon steel punchings.
Of the present utility modelly preferably be set to, the material of described coil windings is aluminum steel.
Of the present utility modelly preferably be set to, described rotor core is an annular iron plate circle.
Of the present utility modelly preferably be set to, the sensitive surface of Hall element is corresponding with the end face of magnetic shoe, and is gapped between the two.
Of the present utility modelly preferably be set to, described plastic packaging refers to adopt BMC thermosetting polyester plastic packaging.
The beneficial effect of external-rotor-type brshless DC motor described in the utility model is:
1, the utility model is by being designed to magnetic shoe the skewed slot magnetic shoe of parallelogram, and inner surface and end face at magnetic shoe magnetize, make electromagnetic torque and induced electromotive force be evenly distributed, effectively weaken the harmonic wave electromotive force that harmony wave produces, thereby electric and magnetic oscillation and noise have been reduced, compare with traditional square magnetic shoe, the work of external-rotor-type brshless DC motor described in the utility model is more steady, and noise is less.
2, the utility model by a plurality of fan-shaped holes and many T shape reinforcements are set, has improved the intensity of housing on housing, can play the effect of fan blade simultaneously, has reduced the temperature rise of motor, has saved material.
3, the utility model by Hall element being arranged on the lower surface of rotor magnetic shoe, makes the induction of Hall element sensitiveer, and the control precision of motor is higher.
4, the utility model is by adopting stator core to be set to combine, adopt aluminum steel to make coil windings by several split silicon steel punchings, rotor adopts annular iron plate circle as rotor core, and stator, the rotor mode such as adopt that BMC polyester envelope is moulded, can significantly reduce the manufacturing cost of motor.
Description of drawings
Fig. 1 is the structure chart of external-rotor-type brshless DC motor described in the utility model;
Fig. 2 is the front view of rotor;
Fig. 3 is the A-A cutaway view of Fig. 2;
Fig. 4 is the structure chart of magnetic shoe;
Fig. 5 is the rearview of external-rotor-type brshless DC motor;
Fig. 6 is the B-B cutaway view of Fig. 5.
Embodiment
The utility model is described in more detail below in conjunction with the drawings and specific embodiments.
As shown in Fig. 1-6, the utility model provides a kind of external-rotor-type brshless DC motor, comprises stator, rotor and Hall element 6; Described stator is fixedly connected with the lower end of decelerating clutch of washing machine lower house, the lower end of described rotor and the power shaft of speed-reducing clutch be fixedly connected with, motor rotation drives power shaft makes the speed-reducing clutch running realize washing and the dehydrating function of washing machine.
Described stator comprises stator core 1, First Line slot liner frame 2, the second wire casing insulating frame 3 and coil windings 4, First Line slot liner frame 2 and the second wire casing insulating frame 3 are arranged on respectively the both sides of stator core 1, and coil windings 4 is around the home on First Line slot liner frame 2 and the second wire casing insulating frame 3; Described stator core 1 is combined by several split silicon steel punchings, and the material of described coil windings 4 is aluminum steel.Coil windings 4 is connected with external power source by power supply wire harness 10.
Described rotor comprises housing 15, and a plurality of magnetic shoes 11, rotor core 12 and the spline inserts 14 of plastic packaging in housing 15, and its middle shell 15 is formed with rotor BMC thermosetting polyester 13 plastic packaging on mould by magnetic shoe 11, rotor core 12,14 combinations of spline inserts.The inner ring that magnetic shoe 11 is inhaled at iron core 12, magnetic shoe 11 is gapped each other; Spline inserts 14 is arranged at the center of housing 15; Described rotor spline inserts 14 is steel plate stampings.Establish a plurality of fan-shaped holes and many T shape reinforcements on described housing 15, described rotor core 12 is an annular iron plate circle, the skewed slot magnetic shoe that described magnetic shoe 11 is parallelogram, and inner surface and the end face of magnetic shoe 11 magnetize, and magnetic shoe 11 materials are ferritic.
Described Hall element 6 is arranged on Hall support 7, and the sensitive surface of Hall element 6 is corresponding with the end face of magnetic shoe 11, and is gapped between the two.Hall support 7 and Hall support fixedly abaculus 8 are fixedly connected with by connectors such as tapping screws, and Hall support fixedly abaculus 8 is embedded on the location notch of First Line slot liner frame 2 of stator right side.Stator core 1, First Line slot liner frame 2, the second wire casing insulating frame 3, coil windings 4 and Hall support fixedly abaculus 8 are used the 5 plastic packaging moulding of stator BMC thermosetting polyester on mould.Hall element 6 is connected with external power source by Hall wire harness 9.
The above is preferred embodiment of the present utility model, and all equivalent variations of doing according to the utility model claim all should belong to protection range of the present utility model.
Claims (7)
1. an external-rotor-type brshless DC motor, comprise stator, rotor and Hall element (6);
Described stator comprises stator core (1), First Line slot liner frame (2), the second wire casing insulating frame (3) and coil windings (4), First Line slot liner frame (2) and the second wire casing insulating frame (3) are arranged on respectively the both sides of stator core (1), and coil windings (4) is around the home on First Line slot liner frame (2) and the second wire casing insulating frame (3);
Described rotor comprises housing (15), and a plurality of magnetic shoes (11), rotor core (12) and the spline inserts (14) of plastic packaging in housing (15), and magnetic shoe (11) is inhaled the inner ring in iron core (12), and magnetic shoe (11) is gapped each other; Spline inserts (14) is arranged at the center of housing (15);
Described Hall element (6) is arranged on Hall support (7), Hall support (7) and Hall support fixedly abaculus (8) are fixedly connected with by a connection piece, Hall support fixedly abaculus (8) is embedded on the location notch of First Line slot liner frame (2) or the second wire casing insulating frame (3), and with the moulding of stator plastic packaging
It is characterized in that, described magnetic shoe (11) is the skewed slot magnetic shoe of parallelogram, and inner surface and the end face of magnetic shoe (11) magnetize.
2. external-rotor-type brshless DC motor according to claim 1, is characterized in that, establishes a plurality of fan-shaped holes and many T shape reinforcements on described housing (15).
3. external-rotor-type brshless DC motor according to claim 1, is characterized in that, described stator core (1) is combined by several split silicon steel punchings.
4. external-rotor-type brshless DC motor according to claim 1, is characterized in that, the material of described coil windings (4) is aluminum steel.
5. external-rotor-type brshless DC motor according to claim 1, is characterized in that, described rotor core (12) is an annular iron plate circle.
6. external-rotor-type brshless DC motor according to claim 1, is characterized in that, the sensitive surface of Hall element (6) is corresponding with the end face of magnetic shoe (11), and is gapped between the two.
7. external-rotor-type brshless DC motor according to claim 1, is characterized in that, described plastic packaging refers to adopt BMC thermosetting polyester plastic packaging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206637700U CN202949342U (en) | 2012-12-04 | 2012-12-04 | Outer rotor type brushless direct current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206637700U CN202949342U (en) | 2012-12-04 | 2012-12-04 | Outer rotor type brushless direct current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202949342U true CN202949342U (en) | 2013-05-22 |
Family
ID=48425021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206637700U Expired - Lifetime CN202949342U (en) | 2012-12-04 | 2012-12-04 | Outer rotor type brushless direct current motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202949342U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969862A (en) * | 2012-12-04 | 2013-03-13 | 浙江三星机电股份有限公司 | Outer rotor type brushless direct current motor |
| CN104979978A (en) * | 2014-04-04 | 2015-10-14 | 安徽聚隆传动科技股份有限公司 | Washing machine direct drive induction machine |
| CN105553216A (en) * | 2016-02-29 | 2016-05-04 | 浙江万冠电机有限公司 | High voltage direct current brushless outer rotor running machine motor |
-
2012
- 2012-12-04 CN CN2012206637700U patent/CN202949342U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969862A (en) * | 2012-12-04 | 2013-03-13 | 浙江三星机电股份有限公司 | Outer rotor type brushless direct current motor |
| CN104979978A (en) * | 2014-04-04 | 2015-10-14 | 安徽聚隆传动科技股份有限公司 | Washing machine direct drive induction machine |
| CN105553216A (en) * | 2016-02-29 | 2016-05-04 | 浙江万冠电机有限公司 | High voltage direct current brushless outer rotor running machine motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130522 |
|
| CX01 | Expiry of patent term |