CN2650384Y - Brushless direct-current motor - Google Patents
Brushless direct-current motor Download PDFInfo
- Publication number
- CN2650384Y CN2650384Y CN 03222300 CN03222300U CN2650384Y CN 2650384 Y CN2650384 Y CN 2650384Y CN 03222300 CN03222300 CN 03222300 CN 03222300 U CN03222300 U CN 03222300U CN 2650384 Y CN2650384 Y CN 2650384Y
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- CN
- China
- Prior art keywords
- rotor
- stator
- brushless
- circuit
- position decoding
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Abstract
A brushless DC motor is provided, which comprises a shell and a stator and a rotor placed inside the shell, the rotor is equipped with a magnetic block, the stator is uniformly distributed with a plurality of pairs of coils, the shell also has a sensor with respect to the magnetic field of the rotor, the sensor is connected with the signal input end of a rotor position decoding and frequency conversion circuit, the output end of the rotor position decoding and frequency conversion circuit together with a power amplifying circuit and stator coils form a brushless drive device. The rotor and the stator adopt the structure similar to that of an AC motor, the rotor position decoding and frequency conversion circuit can output the AC electric signal to the coil through the power amplifying circuit to drive the rotor, no electric brush, no wearing or electric spark, the motor work is stable, durable, safe, and reliable; the brushless structure has a better accuracy for speed regulating.
Description
Technical field: the utility model relates to a kind of DC motor.
Background technology: the buncher that adopts on present many accurate industrial equipments all is a DC motor, also has the more multi-field DC motor of generally all using such as automobile equipment.All will have brush just can drive rotor rotation in the common DC motor, but the brush service wear is bigger, not durable, be easy to damage, and the brush Drive Structure can reduce the accuracy of speed governing, in use may produce spark with rotor, influence fail safe.
Summary of the invention: at the prior art deficiency, the utility model provides a kind of rotation wearing and tearing little, the brushless DC motor of reliable operation safety.
The utility model comprises the rotor of the housing and the heart disposed therein, stator then places rotor periphery to cooperate, rotor is provided with magnetic patch, then be evenly distributed with some on the stator to coil, in housing, also be provided with the magnetic field corresponding sensor that produces with epitrochanterian magnetic patch, this transducer connects the signal input part of rotor-position decoding frequency changer circuit, and the output of rotor-position decoding frequency changer circuit then connects and composes the brushless drive unit by each coil correspondence of power amplification circuit and stator.
Rotor of the present utility model and stator have adopted the structure of similar alternating current machine, rotor-position decoding frequency changer circuit can be through power amplification circuit output AC electricity behind the coil of stator, produce continuous variation magnetic field and drive working rotor, need not to adopt brush, can not wear and tear or produce electric spark, make the machine operation stability and durability, as safe as a house reliable, and the speed governing accuracy of brushless structure is better.
Further specify the utility model below in conjunction with drawings and Examples.
Description of drawings: Fig. 1 is a main structure schematic diagram of the present utility model;
Fig. 2 is that the A of Fig. 1 rotor and stator is to view;
Fig. 3 is a circuit block diagram of the present utility model;
Fig. 4 is the circuit connection diagram of embodiment.
Embodiment: as depicted in figs. 1 and 2, rotor 3 is arranged in housing 1 center, and 2 of stators place 3 peripheral cooperations of rotor.Rotor 3 is provided with magnetic patch 4, can be that the magnetosphere of two couples of S, the N utmost point is enclosed within on the rotor 3 and constitutes by surface magnetization, then is evenly distributed with somely to coil 5 on stator 2, generally gets final product with three pairs.In housing 1, also be provided with rotor 3 on the magnetic field corresponding sensor 6 that produces of magnetic patch 4, as shown in Figure 3, this transducer 6 connects the signal input part of rotor-position decoding frequency changer circuit 7, and the output of rotor-position decoding frequency changer circuit 7 then connects and composes the brushless drive unit by each coil 5 correspondence on power amplification circuit 8 and the stator 2.During work, rotor-position decoding frequency changer circuit 7 can be exported pulse electrical signal to power amplification circuit 8, and amplifying becomes that the coil 5 of input stator 3 produces the continually varying magnetic fields behind the alternating current, and the mating reaction by magnetic patch 4 drives rotor 3 and rotates.Transducer 6 is used for the field signal that magnetic patch 4 in the inductiopn rotor 3 produces, it is the position signalling of rotor 3, after 7 decodings of rotor-position decoding frequency changer circuit, can influence the phase place of output Pulse Electric, make the alternating current and the magnetic field of rotor 3 in the coil 5 of input stator 2 keep cooperating like this, avoid occurring the situation that moment can't start.
As shown in Figure 4, the rotor-position of present embodiment decoding frequency changer circuit 7 is made up of the peripheral components and parts that the integrated package MC33033 and the standard of decoding frequency conversion special use is connected on the respective pins, perhaps realization said function such as also available integrated package MC33035.Transducer 6 is a Hall element, is connected on the signal input pin of integrated package MC33033, and induction accurately and reliably.The complementation that the field effect transistor 10 of the coil 5 identical logarithms of power amplification circuit 8 employings and stator 2 constitutes promotes circuit, and the corresponding output pin of the integrated package MC33033 in the present embodiment is connected coil 5 correspondences by three pairs of field effect transistor 10 with each.Also can be connected with rotating speed and turn to regulating circuit 9 on the rotor-position decoding frequency changer circuit 7, be used to regulate rotating speed and rotating direction.Present embodiment connects potentiometer 11 and switch 12 on the respective pins of integrated package MC33033, control rotating speed respectively and turn to.In fact these respective pins of integrated package MC33033 connect computer by interface, also can and turn to by the computer control rotating speed.Present embodiment also connects the voltage stabilizing circuit of forming with integrated regulator 7812 and peripheral components and parts on the power supply input pin of integrated package MC33033, supply power voltage can be more stable like this.
Claims (4)
1, a kind of brushless DC motor, the rotor that comprises the housing and the heart disposed therein, stator then places rotor periphery to cooperate, it is characterized by: rotor (3) is provided with magnetic patch (4), then be evenly distributed with some on the stator (2) to coil (5), in housing (1), also be provided with and rotor (3) on the magnetic field corresponding sensor (6) that produces of magnetic patch (4), this transducer (6) connects the signal input part of rotor-position decoding frequency changer circuit (7), and the output of rotor-position decoding frequency changer circuit (7) then connects and composes the brushless drive unit by each coil (5) correspondence of power amplification circuit (8) and stator (2).
2, brushless DC motor according to claim 1 is characterized by: also be connected with rotating speed on the rotor-position decoding frequency changer circuit (7) and turn to regulating circuit (9).
3, brushless DC motor according to claim 1 and 2, it is characterized by: transducer (6) is a Hall element, rotor-position decoding frequency changer circuit (7) is made up of the peripheral components and parts that integrated package MC33033 and standard are connected on the respective pins, and power amplification circuit (8) then adopts the complementation promotion circuit with field effect transistor (10) formation of the identical logarithm of coil (5) of stator (2).
4, brushless DC motor according to claim 3 is characterized by: rotating speed and turn to regulating circuit (9) to be made up of the potentiometer (11) and the switch (12) that are connected on the integrated package MC33033 respective pins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03222300 CN2650384Y (en) | 2003-05-28 | 2003-05-28 | Brushless direct-current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03222300 CN2650384Y (en) | 2003-05-28 | 2003-05-28 | Brushless direct-current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2650384Y true CN2650384Y (en) | 2004-10-20 |
Family
ID=34325923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03222300 Expired - Fee Related CN2650384Y (en) | 2003-05-28 | 2003-05-28 | Brushless direct-current motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2650384Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101997378A (en) * | 2009-08-28 | 2011-03-30 | 硅谷微M股份有限公司 | Brushless direct current motor having function of sensing position of RFID rotor magnet |
-
2003
- 2003-05-28 CN CN 03222300 patent/CN2650384Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101997378A (en) * | 2009-08-28 | 2011-03-30 | 硅谷微M股份有限公司 | Brushless direct current motor having function of sensing position of RFID rotor magnet |
| CN101997378B (en) * | 2009-08-28 | 2015-06-03 | 硅谷微M股份有限公司 | Brushless direct current motor having function of sensing position of RFID rotor magnet |
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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: 20041020 |