CN201263117Y - Minitype permanent-magnet brushless DC motor - Google Patents
Minitype permanent-magnet brushless DC motor Download PDFInfo
- Publication number
- CN201263117Y CN201263117Y CNU2008201634343U CN200820163434U CN201263117Y CN 201263117 Y CN201263117 Y CN 201263117Y CN U2008201634343 U CNU2008201634343 U CN U2008201634343U CN 200820163434 U CN200820163434 U CN 200820163434U CN 201263117 Y CN201263117 Y CN 201263117Y
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Abstract
The utility model relates to a miniature permanent magnetic brushless DC motor applied to a vehicle-bone DVD mechanism, which comprises a motor body, a rotor-position sensor and a controller; wherein, the controller is electrically connected with a DC power so as to control the operation of the motor body; the motor body comprises a stator and a rotor; the rotor-position sensor comprises three Hall elements; the rotor-position sensor induces the position change of the rotor magnetic ring of the motor body and inputs signals into the controller; the thickness of an iron core is 5mm to 7mm, the wire diameter of a coil is 0.12mm to 0.17mm and the coil number is 100 to 110; the Hall elements are installed on a bottom plate; and the controller and the motor body are installed separately and connected by a flexible wire. The brushless DC motor has the following advantages: the thickness of the iron core is reduced, the driving power is improved and the volume of the motor is reduced; therefore, the motor is convenient to be installed in the vehicle-bone DVD mechanism.
Description
Technical field
The utility model relates to a kind of miniature permanent-magnet brushless DC electric machine that is applied to the vehicle-carrying DVD movement.
Background technology
Plurality of advantages such as miniature brshless DC motor has the reliability height, the life-span is long, noise is little, efficient is high, motor characteristic is good, radio interference is little and rotating speed is easily controlled, again because its Drive Structure characteristics, easily realize the flat and thin system, therefore in the higher vehicle-carrying DVD movement main shaft drives of specification requirement, be able to extensive utilization.One of the applicant Hangzhou Xinxing Optical Electronics Co., Ltd. had once applied for a kind of utility model patent of miniature non-brush permanent-magnet DC motor to Patent Office of the People's Republic of China, and be authorized to, patent No. ZL200320127118.8, it is made up of stator, rotor, rear end cap, position transducer, rotor is made of casing and motor shaft, casing liner magnet ring, fixing laser disc positioner on the motor shaft; Stator is made of core assembly and bearing assembly, and core assembly is equipped with the bearing assembly base plate of riveting over, and Drive and Control Circuit and bare headed zero-bit indicator cock are set on the base plate.
Though, above-mentioned miniature permanent-magnet brushless DC electric machine has its advantage, but along with the vehicle-carrying DVD movement to ultra-thin trend development, the brshless DC motor that is used for main shaft drives is had higher requirement, motor thickness must reduce, and installing mechanism and drive circuit also should be done corresponding variation simultaneously.Therefore, be necessary above-mentioned patented technology is done some improvement and innovation, develop to ultrathin type so that it adapts to vehicle-carrying DVD movement.
Summary of the invention
This practical utility model discloses a kind of miniature permanent-magnet brushless DC electric machine, and compared with prior art, the thickness that it has reduced motor has adapted to the vehicle-carrying DVD movement and developed to ultrathin direction.
Technical solution adopted in the utility model is as follows: miniature permanent-magnet brushless DC electric machine, comprise motor body, rotor-position sensor and controller, and controller and DC power supply electrically connect, the running of control motor body; Motor body comprises stator, rotor, rotor comprises housing and motor shaft, stator pack vinculum circle core assembly, and the iron-core coil assembly is made of the outer coiling of lamination, one end of motor shaft is matched with base plate by the collar rotary type, and this termination overcoat of motor shaft ends pad; Motor shaft overcoat bearing, bearing peripheral hardware bearing holder (housing, cover), bearing holder (housing, cover) sets firmly the iron-core coil assembly outward, the iron-core coil assembly is in the housing, and inner walls sets firmly rotor magnetic ring, and housing is fixedly linked by chuck seat and motor shaft, outer and the pallet seat of chuck seat is fixedly linked, and the upper surface of housing sets firmly slipmat; Rotor-position sensor comprises three Hall elements, the change in location of the rotor magnetic ring of rotor-position sensor induction machine body, and with signal input controller; Lamination thickness is 5-7mm, and the line of coil directly is 0.12-0.17mm, and the number of turns is the 100-110 circle; Described Hall element is installed on the base plate; Described controller separates installation with motor body, connects by flexible wires between the two.
Described miniature permanent-magnet brushless DC electric machine, three Hall elements are secured to three prong places of stator coil three-phase respectively, and corresponding with epitrochanterian commutation magnet ring, and three Hall elements are connected with the integrated circuit of controller with three drive coils.
Described miniature permanent-magnet brushless DC electric machine, rotor magnetic ring are circulus, 16 groups of magnetic poles of circle distribution.
Described miniature permanent-magnet brushless DC electric machine, stator coil winding are that three-phase Y shape connects, and every the distribution by 90 degree by four groups of coils is connected in series, and angle is 30 degree between coil windings.
Miniature permanent-magnet brushless DC electric machine of the present utility model compared with prior art has the following advantages:
At first, it has reduced the thickness of lamination, by changing 5-7mm into greater than 10mm originally, for guaranteeing to change apart from constant, has changed the line footpath and the number of turns of coil simultaneously, has improved driving power.
Secondly, control circuit is changed into branchs with integrated design main body and is arranged by original, and control circuit is moved into host circuit board, adopts flexible wires (18 line) connection between the two, and motor volume is reduced greatly, is convenient to the installation in the vehicle-carrying DVD movement.
Description of drawings
Fig. 1 is an electric system structure chart of the present utility model.
Fig. 2 is a motor body structure chart of the present utility model.
Fig. 3 is the STRUCTURE DECOMPOSITION figure of motor body of the present utility model.
Fig. 4 is a motor body shape assumption diagram of the present utility model.
Fig. 5 is another shape assumption diagram of motor body of the present utility model.
Fig. 6 is the AN8471SA of a Sanyo type control circuit.
Embodiment
Below in conjunction with accompanying drawing the utility model is elaborated.
As shown in Figure 1, this electric system is made up of three parts: motor body, rotor-position sensor and controller, controller and DC power supply electrically connect, the running of its control motor body.Motor body is the parts that electromagnetic energy are converted to mechanical energy, drives the running of DVD player core.
Shown in Fig. 2-5, motor body comprises stator, rotor, and rotor comprises housing 3 and motor shaft 8.Stator pack vinculum circle core assembly 6, iron-core coil assembly 6 is made of the outer coiling of lamination, and an end of motor shaft 8 is matched with base plate 12 by collar 9 rotary types, and this termination overcoat of motor shaft 8 only fills up 11; Motor shaft 8 overcoat bearings 7, bearing 7 peripheral hardware bearing holder (housing, cover)s 10, the bearing holder (housing, cover) 10 outer iron-core coil assemblies 6 that set firmly, iron-core coil assembly 6 is in the housing 3, housing 3 inwalls set firmly rotor magnetic ring 5, housing 3 is fixedly linked by chuck seat 4 and motor shaft 8, and the outer and pallet seat 1 of chuck seat 4 is fixedly linked, and the upper surface of housing 3 sets firmly slipmat 2; Rotor-position sensor comprises three Hall element H1, H2, H3, the change in location of the rotor magnetic ring of rotor-position sensor induction machine body, and with signal input control circuit.Lamination thickness is 5-7mm, and the line of coil directly is 0.12-0.17mm, and the number of turns is the 100-110 circle; Hall element H1, H2, H3 are installed on the base plate 12; Control circuit separates installation with motor body, connects by flexible wires 13 between the two.
Be installed in the position of magnetic pole variable signal that three Hall element H1, H2, H3 (30 ° of distributions) on the base plate induces the commutation rotor magnetic ring, input dedicated control circuit (AN8470SA type), drive three groups of coils respectively,, promote the rotor running to form rotating magnetic field.
The control circuit that the utility model controller is adopted is the AN8471SA of a Sanyo type, circuit as shown in Figure 6, it is installed on the complete machine mainboard, carries out the signal transmission by flexible lenticular wire on the brushless electric machine base plate 13 and motor body, flexible lenticular wire 13 is 18 cores.
Commutation rotor magnetic ring on the rotor is a circulus, 16 groups of magnetic poles of circle distribution, and promptly the interpolar angle is 22.5 °.The stator coil winding is that three-phase Y shape connects, the every distribution by 90 ° by four groups of coils is connected in series, angle is 30 ° between coil windings, three Hall element H1, H2 of position transducer, H3 are secured to three prong places of stator coil U, V, W three-phase respectively, and corresponding with epitrochanterian commutation magnet ring A, three Hall element H1, H2, H3 and three drive coil U, V, W are connected as shown in Figure 3 with the AN8471SA integrated circuit.
After the energized, rotor magnetic ring induction Hall element H1, produce Hall effect, output after treatment, in the coil by the generation electromagnetic torque that is conducted, rotor rotation, Hall element H3 is reverse, and because of the magnetic pole of rotor magnetic ring distributes 22.5 °, Hall element H2 hysteresis this moment Hall element is responded to for H111.25 °, so 11.25 ° of (electrical degree) conductings of last phase that also lag behind mutually in addition in the coil, continue to make rotor rotation; When turning over 22.5 °, the form of Hall element H2, H3 and above-mentioned Hall element H1, H2 is the same to continue to make rotor rotation, Hall element H1 is reverse, by that analogy, Hall element H1, H2, H3 are subjected to induction to produce a signal respectively, produce pulse-width modulation PWH signal after ic chip carries out logical conversion to signal, amplify through driving again, deliver to each phase winding in order, thereby between the stator of motor and rotor, produce the great-jump-forward rotating magnetic field, drive rotor rotation.When the potential difference of 8 pin that change ic chip and 9 pin, motor speed is done corresponding change, and during EC (control voltage)＜ECR (reference voltage), motor speed is big; During EC 〉=ECR, the motor fast braking.
Claims (4)
1, miniature permanent-magnet brushless DC electric machine comprises motor body, rotor-position sensor and controller, and controller and DC power supply electrically connect, the running of control motor body; Motor body comprises stator, rotor, rotor comprises housing and motor shaft, stator pack vinculum circle core assembly, and the iron-core coil assembly is made of the outer coiling of lamination, one end of motor shaft is matched with base plate by the collar rotary type, and this termination overcoat of motor shaft ends pad; Motor shaft overcoat bearing, bearing peripheral hardware bearing holder (housing, cover), bearing holder (housing, cover) sets firmly the iron-core coil assembly outward, the iron-core coil assembly is in the housing, and inner walls sets firmly rotor magnetic ring, and housing is fixedly linked by chuck seat and motor shaft, outer and the pallet seat of chuck seat is fixedly linked, and the upper surface of housing sets firmly slipmat; Rotor-position sensor comprises three Hall elements, the change in location of the rotor magnetic ring of rotor-position sensor induction machine body, and with signal input controller; It is characterized in that described lamination thickness is 5-7mm, the line of coil directly is 0.12-0.17mm, and the number of turns is the 100-110 circle; Described Hall element is installed on the base plate; Described controller separates installation with motor body, connects by flexible wires between the two.
2, miniature permanent-magnet brushless DC electric machine according to claim 1, it is characterized in that, three Hall elements are secured to three prong places of stator coil three-phase respectively, and corresponding with epitrochanterian commutation magnet ring, and three Hall elements are connected with the integrated circuit of controller with three drive coils.
3, miniature permanent-magnet brushless DC electric machine according to claim 1 is characterized in that, rotor magnetic ring is a circulus, 16 groups of magnetic poles of circle distribution.
4, miniature permanent-magnet brushless DC electric machine according to claim 1 is characterized in that, the stator coil winding is that three-phase Y shape connects, and every the distribution by 90 degree by four groups of coils is connected in series, and angle is 30 degree between coil windings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201634343U CN201263117Y (en) | 2008-09-01 | 2008-09-01 | Minitype permanent-magnet brushless DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201634343U CN201263117Y (en) | 2008-09-01 | 2008-09-01 | Minitype permanent-magnet brushless DC motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201263117Y true CN201263117Y (en) | 2009-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201634343U Expired - Fee Related CN201263117Y (en) | 2008-09-01 | 2008-09-01 | Minitype permanent-magnet brushless DC motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201263117Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102163903A (en) * | 2011-05-03 | 2011-08-24 | 东南大学 | Permanent magnetic brushless direct-current motor with integrated Hall position sensor and controller |
| CN102710041A (en) * | 2012-07-24 | 2012-10-03 | 太原理工大学 | Multiphase permanent-magnetic direct-current adjustable-speed motor |
-
2008
- 2008-09-01 CN CNU2008201634343U patent/CN201263117Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102163903A (en) * | 2011-05-03 | 2011-08-24 | 东南大学 | Permanent magnetic brushless direct-current motor with integrated Hall position sensor and controller |
| CN102163903B (en) * | 2011-05-03 | 2012-10-24 | 东南大学 | Permanent magnetic brushless direct-current motor with integrated Hall position sensor and controller |
| CN102710041A (en) * | 2012-07-24 | 2012-10-03 | 太原理工大学 | Multiphase permanent-magnetic direct-current adjustable-speed motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090624 Termination date: 20150901 |
|
| EXPY | Termination of patent right or utility model |