CN202178695U - Permanent magnet brushless DC motor - Google Patents
Permanent magnet brushless DC motor Download PDFInfo
- Publication number
- CN202178695U CN202178695U CN2011202836984U CN201120283698U CN202178695U CN 202178695 U CN202178695 U CN 202178695U CN 2011202836984 U CN2011202836984 U CN 2011202836984U CN 201120283698 U CN201120283698 U CN 201120283698U CN 202178695 U CN202178695 U CN 202178695U
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- magnet steel
- ring
- hall element
- motor
- magnet
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Abstract
A permanent magnet brushless DC motor comprises a motor housing, a stator iron core, a magnet steel stand and a sensor magnetic steel, wherein a stator and a rotor are disposed in the motor housing, the stator iron core is provided with a winding coil, the magnet steel stand is fixed on a motor rotating shaft that stretches out of an end cap, and the sensor magnetic steel is arranged on the magnet steel stand. The magnet steel stand is provided with a circular ring-shaped back-up ring. A folding structure is formed between the back-up ring and the sidewall of the magnet steel stand. The back-up ring and the sidewall of the magnet steel stand are combined to one body. The sensor magnetic steel is arranged on the inner side of the back-up ring. The magnetic line of the sensor magnetic steel is perpendicular to the motor rotating shaft. A Hall element is disposed on the inner side of the sensor magnetic steel. The back-up ring enables the sensor magnetic steel to be effectively fixed and helps to prevent the sensor magnetic steel from disengaging. According to the utility model, the magnetic line of the sensor magnetic steel is perpendicular to the motor rotating shaft, the Hall element is disposed on the inner side of the sensor magnetic steel, the Hall element and the sensor magnetic steel are arranged in a coaxial manner, and the distance between the Hall element and the sensor magnetic steel is easy to be controlled, such that the electronic communicating signals of a motor are more reliable.
Description
Technical field
The utility model relates to a kind of non-brush permanent-magnet DC motor.
Background technology
At present, various permanent magnet brushless DC motor structures are numerous.At the Chinese patent of first to file a kind of " non-brush permanent-magnet DC motor " proposed like me for No. 200820082033.5.In this technical scheme, non-brush permanent-magnet DC motor comprises: be provided with stator and rotor in the electric machine casing, stator core is provided with winding coil; Rotor shaft is provided with the magnetic core that discoid steel disc builds up; The magnetic core periphery is fixed with the rotor magnetic shoe, and motor is provided with the position sensing element that comprises transducer magnet steel and Hall element, and the transducer magnet steel is located in the magnet steel seat; Magnet steel seat is fixed in and stretches out on the outer machine shaft of end cap, and transducer magnet steel and Hall element are located in the cavity of end cap and dust cap formation.The Hall element of above-mentioned non-brush permanent-magnet DC motor does not receive the interior temperatures involved of electric machine casing and the interference of armature supply, and machine operation is stable.But not enough below existing:
1, because the transducer magnet steel adopts plate armature, and Hall element is located at a side of transducer magnet steel, Hall element and transducer magnet steel distance are difficult to control, cause the motor electronic commutation signal unreliable.
2, because the transducer magnet steel adopts plate armature, the manufacturing of magnet steel is inconvenient, and manufacturing cost is high.
3, because the transducer magnet steel adopts plate armature, in manufacturing and maintenance process, adjust the polarity consistency of transducer magnet steel and motor, existing external transducer is difficult to adjust, and makes that the manufacturing of motor and maintenance are all very inconvenient.
Summary of the invention
The purpose of the utility model is: a kind of working stability, non-brush permanent-magnet DC motor that reliability is high are provided.
The utility model is realized through following technical scheme:
A kind of non-brush permanent-magnet DC motor comprises: be provided with stator and rotor in the electric machine casing, stator core is provided with winding coil, and rotor shaft is provided with the magnetic core that discoid steel disc builds up; The magnetic core periphery is fixed with the rotor magnetic shoe; Motor is provided with the position sensing element that comprises transducer magnet steel and Hall element, and magnet steel seat is fixed in and stretches out on the outer machine shaft of end cap, and the transducer magnet steel is located in the magnet steel seat; It is characterized in that: described magnet steel seat has the back-up ring of annular; Be bending-like between the sidewall of back-up ring and magnet steel seat, the sidewall of back-up ring and magnet steel seat is an integral piece, and the transducer magnet steel is placed in the inboard of back-up ring; The magnetic line of force direction of transducer magnet steel is perpendicular to the machine shaft setting, and Hall element is located at the inboard of transducer magnet steel.
The advantage of the utility model is: stretch out on the outer machine shaft of end cap because magnet steel seat is fixed in, the motor electronic commutation signal does not receive the interference of high temperature in rotor machining accuracy, armature supply and the casing, makes machine operation more stable.Under the operating mode of rotor high-speed rotation, the transducer magnet steel can produce very big centrifugal force, because magnet steel seat has the back-up ring of annular, the transducer magnet steel is placed in the inboard of back-up ring, and back-up ring is the fixed sensing magnet steel effectively, avoids the transducer magnet steel to break away from.Because magnet steel seat has the back-up ring of annular, the transducer magnet steel can adopt the sectional type magnet steel of magnetic line of force direction perpendicular to machine shaft, and the mechanical processing technique of this type of magnet steel is ripe, low cost of manufacture.Because the magnetic line of force direction of transducer magnet steel is perpendicular to the machine shaft setting; Hall element is located at the inboard of transducer magnet steel; Hall element of the utility model and transducer magnet steel are the coaxial state setting; The spacing of Hall element and transducer magnet steel is easy to control, makes the motor electronic commutation signal more reliable.
In the utility model, described Hall element is fixed on the terminal block, and terminal block is installed on the terminal block mount pad, and the terminal block mount pad is provided with arc adjustment hole, and the fixing hole of terminal block mount pad is arranged on the end cap.Because the terminal block mount pad is provided with arc adjustment hole, the adjustment through arc adjustment hole can make the transducer magnet steel consistent with the polarity of motor.When Hall element damages, as long as just will with the terminal block of Hall element take out change can, the maintenance of motor is more convenient.
In the utility model, described terminal block mount pad is provided with the perforate that is used to pass Hall element.It is beneficial to the installation Hall element, guarantees the spacing of Hall element and transducer magnet steel.
Description of drawings:
Fig. 1 is the structural representation of the utility model non-brush permanent-magnet DC motor.
Fig. 2 is the utility model position sensing element place exploded sketch.
Fig. 3 is the schematic perspective view of the utility model transducer magnet steel and magnet steel seat.
Fig. 4 is the floor map of the utility model transducer magnet steel and magnet steel seat.
Embodiment:
In conjunction with Fig. 1, Fig. 2, Fig. 3, shown in Figure 4: the non-brush permanent-magnet DC motor of present embodiment comprises: be provided with stator 2 and rotor 3 in the electric machine casing 1; Stator core is provided with winding coil 4; Rotor shaft is provided with the magnetic core that discoid steel disc builds up, and the magnetic core periphery is fixed with rotor magnetic shoe 5, and motor is provided with the position sensing element that comprises transducer magnet steel 6 and Hall element 7; Magnet steel seat 8 is fixed on the machine shaft 10 that stretches out outside the end cap 9, and transducer magnet steel 6 is located in the magnet steel seat 8.Magnet steel seat 8 has the back-up ring 11 of annular; 12 of the sidewalls of back-up ring 11 and magnet steel seat are bending-like; Back-up ring 11 is an integral piece with the sidewall 12 of magnet steel seat; Transducer magnet steel 6 is placed in the inboard of back-up ring 11, and the magnetic line of force direction of transducer magnet steel 6 is provided with perpendicular to machine shaft 10, and Hall element 7 is located at the inboard of transducer magnet steel.
The non-brush permanent-magnet DC motor of the utility model is under the operating mode of rotor high-speed rotation, and back-up ring is the fixed sensing magnet steel effectively, avoids the transducer magnet steel to break away from.Because the transducer magnet steel can adopt the sectional type magnet steel of magnetic line of force direction perpendicular to machine shaft, low cost of manufacture.Hall element of the utility model and transducer magnet steel are the coaxial state setting, and the spacing of Hall element and transducer magnet steel is easy to control, makes the motor electronic commutation signal more reliable.Because the terminal block mount pad is provided with arc adjustment hole, the adjustment through arc adjustment hole can make the transducer magnet steel consistent with the polarity of motor.When Hall element damages, as long as just will with the terminal block of Hall element take out change can, the maintenance of motor is more convenient.
Claims (3)
1. a non-brush permanent-magnet DC motor comprises: be provided with stator and rotor in the electric machine casing, stator core is provided with winding coil, and rotor shaft is provided with the magnetic core that discoid steel disc builds up; The magnetic core periphery is fixed with the rotor magnetic shoe; Motor is provided with the position sensing element that comprises transducer magnet steel and Hall element, and magnet steel seat is fixed in and stretches out on the outer machine shaft of end cap, and the transducer magnet steel is located in the magnet steel seat; It is characterized in that: described magnet steel seat has the back-up ring of annular; Be bending-like between the sidewall of back-up ring and magnet steel seat, the sidewall of back-up ring and magnet steel seat is an integral piece, and the transducer magnet steel is placed in the inboard of back-up ring; The magnetic line of force direction of transducer magnet steel is perpendicular to the machine shaft setting, and Hall element is located at the inboard of transducer magnet steel.
2. non-brush permanent-magnet DC motor according to claim 1; It is characterized in that: described Hall element is fixed on the terminal block; Terminal block is installed on the terminal block mount pad, and the terminal block mount pad is provided with arc adjustment hole, and the fixing hole of terminal block mount pad is arranged on the end cap.
3. non-brush permanent-magnet DC motor according to claim 1 is characterized in that: described terminal block mount pad is provided with the perforate that is used to pass Hall element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202836984U CN202178695U (en) | 2011-08-05 | 2011-08-05 | Permanent magnet brushless DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202836984U CN202178695U (en) | 2011-08-05 | 2011-08-05 | Permanent magnet brushless DC motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202178695U true CN202178695U (en) | 2012-03-28 |
Family
ID=45868559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202836984U Ceased CN202178695U (en) | 2011-08-05 | 2011-08-05 | Permanent magnet brushless DC motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202178695U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104022612A (en) * | 2014-05-30 | 2014-09-03 | 沈阳兴华航空电器有限责任公司 | Brushless DC motor with adjustable position sensor |
| CN106208545A (en) * | 2016-09-13 | 2016-12-07 | 彭希南 | Amorphous alloy core body permanent-magnet brushless DC electric machine |
| CN106558970A (en) * | 2015-09-28 | 2017-04-05 | 浙江超强机械有限公司 | A kind of non-brush permanent-magnet DC motor |
| CN114465436A (en) * | 2021-12-31 | 2022-05-10 | 东阳市联宜机电有限公司 | Motor with adjustable oblique poles |
-
2011
- 2011-08-05 CN CN2011202836984U patent/CN202178695U/en not_active Ceased
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104022612A (en) * | 2014-05-30 | 2014-09-03 | 沈阳兴华航空电器有限责任公司 | Brushless DC motor with adjustable position sensor |
| CN106558970A (en) * | 2015-09-28 | 2017-04-05 | 浙江超强机械有限公司 | A kind of non-brush permanent-magnet DC motor |
| CN106208545A (en) * | 2016-09-13 | 2016-12-07 | 彭希南 | Amorphous alloy core body permanent-magnet brushless DC electric machine |
| CN114465436A (en) * | 2021-12-31 | 2022-05-10 | 东阳市联宜机电有限公司 | Motor with adjustable oblique poles |
| CN114465436B (en) * | 2021-12-31 | 2024-05-17 | 浙江联宜电机有限公司 | Oblique pole adjustable motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20151208 Decision number of declaring invalidation: 27504 Granted publication date: 20120328 |
|
| IW01 | Full invalidation of patent right |