CN2638325Y - Inner rotor permanent-magnetic brushless dc motor - Google Patents
Inner rotor permanent-magnetic brushless dc motor Download PDFInfo
- Publication number
- CN2638325Y CN2638325Y CN 03249962 CN03249962U CN2638325Y CN 2638325 Y CN2638325 Y CN 2638325Y CN 03249962 CN03249962 CN 03249962 CN 03249962 U CN03249962 U CN 03249962U CN 2638325 Y CN2638325 Y CN 2638325Y
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- rotor
- motor
- magnetic
- generator
- brshless
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Abstract
The utility model discloses an inner-rotor permanent magnetic brushless DC generator, comprising a generator stator, a rotor, an end cap and a position sensor element. The stator comprises stator cores, end rings, rivets and a winding, wherein the rotor cores are connected with the end rings through rivets, and the external circle of the rotor cores is the housing of the generator. The inner rotor consists of a generator shaft and rotor magnetic steel which is fixed on the external circle of the generator shaft and the external circle of the rotor magnetic steels is winded by weft-less belt. The utility model has the advantages of simple structure, small volume, light weight, low production cost, stable wave of the output signal of the location sensor, high precision of rotor location sensing, exact transmission, and high total effect of the generator.
Description
Technical field
The utility model relates to machine field, particularly relates to a kind of internal rotor permanent-magnetic brshless DC motor.
Background technology
At present electric wheel-chair vehicle adopts two kinds of brush direct current machine and brshless DC motors, the brush direct current machine is arranged in commutation process, friction between brush and the commutator can produce spark interference, ring fire and brush noise, so not only increased loss, reduced efficient, noise is bigger simultaneously, causes motor to have defectives such as life-span weak point, failure rate height.And brshless DC motor commutates with electronic devices and components, can not produce spark interference, ring fire, does not also have the brush noise, and the brshless DC motor that uses at present is outer-rotor type, because torque fluctuations is big, causes running stability relatively poor.
The utility model content
The purpose of this utility model is to provide a kind of efficient height, cost is low, noise is low and the internal rotor permanent-magnetic brshless DC motor of injection volume and good operational stability.
The purpose of this utility model and solve its technical problem underlying and realize by the following technical solutions: according to a kind of internal rotor permanent-magnetic brshless DC motor that the utility model proposes, comprise motor stator, rotor, end cap and position sensing element, above-mentioned stator comprises stator core, end ring, rivet and winding, wherein stator core connects by rivet with end ring, and the outer garden of stator core is the shell of motor; Rotor is formed internal rotor by motor shaft and rotor magnetic steel, and wherein rotor magnetic steel is fixed on the motor shaft cylindrical, and no latitude band is twined in the outer garden of rotor magnetic steel.
The purpose of this utility model and solve its technical problem and can also adopt following technical measures further to realize.
The utility model is provided with seam in two end ring ends, and front end housing is connected by seam with rear end cap.Position sensing element is made up of wiring board, three Hall elements, transducer magnet steel, and Hall element is packed in the wiring board, and it is 60 degree that the mechanical angle between the Hall element differs, and the transducer magnet steel is pressed in the motor shaft, and the magnet steel number of poles is identical with rotor magnetic steel with polarity.
It is 10mm watt of shape ferrite magnetic steel that rotor magnetic steel is selected thickness for use, and the thickness of no latitude band is 0.1-0.2mm.
The operation principle of the utility model control circuit is: after the operating grip action, output signal is sent into central processor CPU and is carried out comprehensive computing, decoded signal and control signal effect after logical operation, are sent into commutation and running that the analog line driver face is finished brshless DC motor.
Internal rotor permanent-magnetic brshless DC motor of the present utility model is mainly used in and drives various electric wheelchair vehicles, also can be used for the other field with the work of internal rotor form.
The utility model compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, stator of the present utility model and rotor structure are simple, and volume is little, and be in light weight, low cost of manufacture, the position sensor output signal waveform stabilization, rotor position sensing precision height, commutation is accurately, make the motor overall benefit improve, control system had both been simplified circuit with CPU computer chip and Digital Circuit Control, again multiple function can be set.
Embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a circuit board structure schematic diagram of the present utility model.
Fig. 3 is the fundamental diagram of the utility model control circuit.
Mark among the figure:
1, front end housing 2, end ring 3, stator core 4, rivet
5, transducer magnet steel 6, Hall element 7, wiring board 8, rear end cap
9, winding 10, rotor magnetic steel 11, motor shaft 12, no latitude band
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to according to its embodiment of internal rotor permanent-magnetic brshless DC motor, structure, feature and the effect thereof that the utility model proposes, describe in detail as after.
As shown in Figure 1, internal rotor permanent-magnetic brshless DC motor of the present utility model, comprise motor stator, rotor, front end housing, rear end cap and position sensing element, above-mentioned stator comprises stator core 3, end ring 2, rivet 4 and winding 9, stator core 3 is connected by rivet 4 with end ring 2, stator core 3 outer gardens are the shell of motor, and do not need to make independent motor housing; Rotor is formed internal rotor by motor shaft 11 and rotor magnetic steel 10, it is 10mm watt of shape ferrite magnetic steel that rotor magnetic steel 10 is selected thickness for use, rotor magnetic steel 10 usefulness glue (HT1001) are adhesively fixed on motor shaft 11 cylindricals, for preventing that rotor from throwing away magnet steel when the high speed rotating, no latitude band 12 is twined in rotor magnetic steel 10 outer gardens, and the thickness of no latitude band 12 scope preferably is 0.1-0.2mm.Winding adopts ABC three phase windings to press the connection of Y shape, and phase difference is 120 degree.
Be provided with seam in two end ring, 2 ends, front end housing 1 and rear end cap 8 are connected by seam.
As depicted in figs. 1 and 2, position sensing element is made up of wiring board 7, three Hall elements 6, transducer magnet steel 5, Hall element 6 is packed in the wiring board 7, it is 60 degree that mechanical angle between the Hall element 6 differs, transducer magnet steel 5 is pressed in the motor shaft 11, and transducer magnet steel 5 numbers of poles are identical with rotor magnetic steel 10 with polarity, and the magnetic material that transducer magnet steel 5 is selected for use is fast quenching bonded neodymium-iron-boron (NSM-80), its magnetic property is stable, rotor position sensing precision height.
As shown in Figure 3, the operation principle of the utility model control circuit is: after the operating grip action, output signal is sent into central processor CPU and is carried out comprehensive computing, decoded signal and control signal effect, after logical operation, send into commutation and running that the analog line driver face is finished brshless DC motor.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, any technical solutions of the utility model content that do not break away from,, all still belong in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present utility model.
Claims (5)
1, a kind of internal rotor permanent-magnetic brshless DC motor comprises motor stator, rotor, end cap and position sensing element, it is characterized in that:
Above-mentioned stator comprises stator core (3), end ring (2), rivet (4) and winding (9), and wherein stator core (3) is connected by rivet (4) with end ring (2), and stator core (3) cylindrical is the shell of motor;
Above-mentioned rotor is formed internal rotor by motor shaft (11) and rotor magnetic steel (10), and wherein rotor magnetic steel (10) is fixed on motor shaft (11) cylindrical, and rotor magnetic steel (10) cylindrical twines no latitude band (12).
2, internal rotor permanent-magnetic brshless DC motor as claimed in claim 1 is characterized in that: two end ring, 2 ends are provided with seam, and front end housing 1 and rear end cap 8 are connected by seam.
3, internal rotor permanent-magnetic brshless DC motor as claimed in claim 2 is characterized in that: it is 10mm watt of shape ferrite magnetic steel that rotor magnetic steel (10) is selected thickness for use.
4, internal rotor permanent-magnetic brshless DC motor as claimed in claim 3 is characterized in that: the thickness of no latitude band (12) is 0.1-0.2mm.
5, as described any internal rotor permanent-magnetic brshless DC motor of claim 1 to 4, it is characterized in that: position sensing element is made up of wiring board (7), three Hall elements (6), transducer magnet steel (5), Hall element (6) is packed in the wiring board (7), it is 60 degree that mechanical angle between the Hall element (6) differs, transducer magnet steel (5) is pressed in the motor shaft (11), and transducer magnet steel (5) number of poles is identical with rotor magnetic steel (10) with polarity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03249962 CN2638325Y (en) | 2003-08-14 | 2003-08-14 | Inner rotor permanent-magnetic brushless dc motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03249962 CN2638325Y (en) | 2003-08-14 | 2003-08-14 | Inner rotor permanent-magnetic brushless dc motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2638325Y true CN2638325Y (en) | 2004-09-01 |
Family
ID=34293715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03249962 Expired - Fee Related CN2638325Y (en) | 2003-08-14 | 2003-08-14 | Inner rotor permanent-magnetic brushless dc motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2638325Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101944815A (en) * | 2010-04-29 | 2011-01-12 | 南京上星机电有限公司 | DC brushless motor |
| CN105846580A (en) * | 2016-06-06 | 2016-08-10 | 南通金驰机电有限公司 | Surface-mounted permanent magnet motor structure |
| CN110932481A (en) * | 2019-12-19 | 2020-03-27 | 南京南微电机有限公司 | Permanent magnet servo motor with built-in axial Hall circuit board |
-
2003
- 2003-08-14 CN CN 03249962 patent/CN2638325Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101944815A (en) * | 2010-04-29 | 2011-01-12 | 南京上星机电有限公司 | DC brushless motor |
| CN105846580A (en) * | 2016-06-06 | 2016-08-10 | 南通金驰机电有限公司 | Surface-mounted permanent magnet motor structure |
| CN110932481A (en) * | 2019-12-19 | 2020-03-27 | 南京南微电机有限公司 | Permanent magnet servo motor with built-in axial Hall circuit board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040901 Termination date: 20120814 |