CN2657273Y - Rotor and stator for dc brushless motor - Google Patents
Rotor and stator for dc brushless motor Download PDFInfo
- Publication number
- CN2657273Y CN2657273Y CN 200320119911 CN200320119911U CN2657273Y CN 2657273 Y CN2657273 Y CN 2657273Y CN 200320119911 CN200320119911 CN 200320119911 CN 200320119911 U CN200320119911 U CN 200320119911U CN 2657273 Y CN2657273 Y CN 2657273Y
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- motor
- rotor
- stator
- rotor part
- upper rotor
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- Expired - Fee Related
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- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
A rotor and a stator of a DC brushless motor belong to a disk DC motor. The rotor of the motor consists of an axis, an upper rotor and a lower rotor, wherein, the upper rotor and the lower rotor are connected with the axis, and the upper rotor and the lower rotor are connected with permanent-magnets; the stator is connected with the housing and located in the middle of the upper rotor and the lower rotor. Because a coil stator is located in the middle of the upper rotor and the lower rotor, and the upper rotor and the lower rotor both produce thrusts to the coil, so theoretically the rotor can gain a driving moment once bigger than the former driving moment which makes the working efficiency of the motor increasing greatly. No use of the steel core in the DC motor has saved a great deal of non ferrous metals; the arrangement of the permanent-magnet in the groove which prevents the permanent-magnet falling off from the stator has prolonged the service life of the motor; since the coil is not connected with a robotistic commutator, the motor can be made more thinner, and moreover, the motor can operate normally without any damage in damp circumstance or even when waters enter the interior of the motor, which makes the motor adapt to worse working atmosphere.
Description
Technical field
The utility model relates to a kind of rotor and stator of magnetic disc type DC motor, particularly a kind of DC Brushless Motor.
Background technology
At present, the magnetic disc type DC motor that people use is to be made of rotor and stator two parts, the stator of motor is fan-shaped permanent magnet, and permanent magnet is bonded on the disk of an end in the housing and constitutes a flat circle, remains with bigger gap between adjacent two permanent magnets; The rotor of motor has one, and two ends of axle on housing, are fixed with coil by Bearing Installation on axle, and coil is a planar coil, is fixed with commutator in the end of axle, and the output of coil is connected with the mechanical switching device.Because this motor adopts the energy input of mechanical switching device as motor, noise is big when therefore working, interference is big, it is moist to be afraid of, the commutator and the coil of motor are necessary for one, make thinner that motor can not do, simultaneously also because motor carbon brush and commutator rotation friction when work, make the maintenance capacity of motor big, the life-span is short, fan-shaped permanent magnet also occurred from the situation that housing comes off, and causes motor to scrap; Because so the only relative end face permanent magnet work of coil is the inefficiency of this motor.
Summary of the invention
The purpose of this utility model is to solve the ineffective technical problem that the structure of the rotor of existing DC Brushless Motor and stator causes.
The purpose of this utility model is achieved in that the rotor of motor is made of axle, upper rotor part and lower rotor part, and upper rotor part is connected with axle with lower rotor part, is connected with permanent magnet on upper rotor part and lower rotor part; Stator is connected with housing and between upper rotor part and lower rotor part.
One ring recess is arranged on the end face of described upper rotor part and lower rotor part relative stator, and permanent magnet is installed in the groove, and the permanent magnet quantity of installing on upper rotor part and the lower rotor part is identical.
Described permanent magnet becomes even number to be installed in the groove, and the polarity of adjacent two permanent magnets is opposite; The polarity of corresponding permanent magnet is opposite on upper rotor part and the lower rotor part.
Stator has a stator frame, is connected with stator coil and hall device on the stator frame.
Beneficial effect: in the such scheme, because coil stator is between upper rotor part and lower rotor part, upper rotor part and lower rotor part produce thrust to coil simultaneously, therefore rotor can obtain greater than original one times pushing torque theoretically, the operating efficiency of motor is increased substantially, reached the purpose of this utility model.The rotor of this DC motor has been saved a large amount of non-ferrous metals without iron core, makes the manufacturing process of motor simpler; Permanent magnet is installed in the groove, can not come off from stator, improved the useful life of motor, do not connect the mechanical type commutator on the coil, motor can be done thinlyyer, operate as normal under the situation that this motor can also be intake in humidity or motor and not damaging makes motor can adapt to bad working environment more.
Description of drawings
Fig. 1 is the first example structure figure of the present utility model.
Fig. 2 is the second example structure figure of the present utility model.
Embodiment
Embodiment 1: the rotor of motor is made of axle 4, upper rotor part 2 and lower rotor part 6, upper rotor part 6 is connected with axle 4, the cylindrical sidewall of lower rotor part 6 and the cylindrical sidewall of upper rotor part 2 are fastened and connected, and axle 4 is connected with housing 1 by bearing 3, is connected with permanent magnet 7 on upper rotor part 2 and lower rotor part 6; Stator 8 is between upper rotor part 2 and lower rotor part 6.
On the end face of described upper rotor part 2 and lower rotor part 6 relative stator 8 ring recess is arranged, permanent magnet 7 is installed in the groove and constitutes a circle for fan-shaped, permanent magnet 7 can not come off in groove, permanent magnet 7 quantity of installing on upper rotor part 2 and the lower rotor part 6 are identical, 7 one-tenth even numbers of permanent magnet are installed in the groove, use 6 in the present embodiment on a rotor.The polarity of adjacent two permanent magnets 7 is opposite; The polarity of corresponding permanent magnet 7 is opposite on upper rotor part 2 and the lower rotor part 6.
Stator 8 has a stator frame 5, is circle sheet around the stator frame 5; There is cylinder at the center, cylinder is connected on the bottom surface of housing, there is a through hole at the center of the cylinder of stator frame 5, axle 4 passes from through hole, the circle sheet of the coil of stator 8 and hall device and stator frame 5 is solidified as one, stator coil is totally three groups of planar coils in the present embodiment, at each correspondence position of organizing coil a hall device is arranged, and the output line of stator coil and hall device is connected with electronic commutator.
Embodiment 2: the upper rotor part 2 of motor and lower rotor part 6 are connected with axle 4, and axle 4 is connected with housing 1 by bearing 3, and upper rotor part 2 and lower rotor part 6 are connected on spools 4 between two bearings 3.Stator coil is totally ten groups of planar coils in the present embodiment, and other and enforcement 1 are omited together.
The stator frame cylindrical of stator is connected on the madial wall of housing.Other and embodiment 1 omit together herein.
Claims (4)
1, a kind of rotor of DC Brushless Motor and stator is characterized in that: the rotor of motor is made of axle, upper rotor part and lower rotor part, and upper rotor part is connected with axle with lower rotor part, is connected with permanent magnet on upper rotor part and lower rotor part; Stator is connected with housing and between upper rotor part and lower rotor part.
2, the rotor of DC Brushless Motor according to claim 1 and stator is characterized in that: on the end face of described upper rotor part and lower rotor part relative stator a ring recess is arranged, permanent magnet is installed in the groove, and the permanent magnet quantity of installing on upper rotor part and the lower rotor part is identical.
3, the rotor of DC Brushless Motor according to claim 1 and stator is characterized in that: described permanent magnet becomes even number to be installed in the groove, and the polarity of adjacent two permanent magnets is opposite; The polarity of corresponding permanent magnet is opposite on upper rotor part and the lower rotor part.
4, the rotor of DC Brushless Motor according to claim 1 and stator is characterized in that: stator has a stator frame, is connected with stator coil and hall device on the stator frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320119911 CN2657273Y (en) | 2003-11-21 | 2003-11-21 | Rotor and stator for dc brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320119911 CN2657273Y (en) | 2003-11-21 | 2003-11-21 | Rotor and stator for dc brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2657273Y true CN2657273Y (en) | 2004-11-17 |
Family
ID=34347806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320119911 Expired - Fee Related CN2657273Y (en) | 2003-11-21 | 2003-11-21 | Rotor and stator for dc brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2657273Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102457135B (en) * | 2010-10-20 | 2016-08-10 | 德昌电机(深圳)有限公司 | Starting motor used by engine |
-
2003
- 2003-11-21 CN CN 200320119911 patent/CN2657273Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102457135B (en) * | 2010-10-20 | 2016-08-10 | 德昌电机(深圳)有限公司 | Starting motor used by engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |