CN104852544A - Direct-current brushless motor - Google Patents
Direct-current brushless motor Download PDFInfo
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- CN104852544A CN104852544A CN201410057048.6A CN201410057048A CN104852544A CN 104852544 A CN104852544 A CN 104852544A CN 201410057048 A CN201410057048 A CN 201410057048A CN 104852544 A CN104852544 A CN 104852544A
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- brushless motor
- permanent magnet
- annular permanent
- direct
- magnetic
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Abstract
A direct-current brushless motor is provided with an external rotor, an internal stator, end covers, bearings and accessories. The direct-current brushless motor is characterized in that an iron core is arranged on an anti-rotation shaft of the internal stator of the direct-current brushless motor, the outer diameter wall of the iron core is provided with linear insulating conductive strips arranged in the circumferential direction, two ends of each linear insulating conductive strip are respectively provided with an insulating annular collector ring, the linear conductive strips and the collector rings are connected with each other to form a cage-type conductive frame, the two collector rings are connected with electric magnetic wires, the electric magnetic wires penetrate through a conductive wire hole in the anti-rotation shaft, and the inner circumferential wall of an external rotor cylindrical wheel hub is provided with an annular permanent magnet. The magnetic performance of the annular permanent magnet is characterized in that N magnetic poles are uniformly arranged on the outer periphery, S magnetic poles are uniformly arranged on the inner periphery, or the N magnetic poles are uniformly arranged on the inner periphery, the S magnetic poles are uniformly arranged on the outer periphery. According to the invention, a brush, a commutator, a Hall element position sensor and an electronic semiconductor commutator device of a direct-current motor in the prior art are omitted, the structure is simple, and the rotating speed of motor can be directly and steplessly adjusted with a voltage or current adjustment method.
Description
Art:
The present invention relates to motor technology.
Background technology:
Direct current machine in prior art, as brush direct current motor, it needs brush and commutator, brush and commutator have abrasion condition, and DC brushless motor be utilize Hall element position transducer, current switching that electronic semi-conductor's (electronic commutator) controls the corresponding coil of three phase electric machine.The and for example patent No. (application number) CN03135499.8 patent, what it adopted is the mutually exclusive principle of like pole, because its winding (6) is that end is radial, edge is axially wound on the annular core of stator, the magnetic line of force that its stator winding electrifying produces, magnetic density in annular core is high, and the surface of annular core is some magnetic flux leakages, no matter Current adjustment how high of winding, weak micro-of electromagnetic repulsion force intensity in magnetic space between its stator core and rotor, thus, what no matter the permanent magnet of its rotor adopted is N pole or S pole, because the electromagnetic repulsion force intensity in the magnetic space between stator core and rotor is less than the suction intensity of permanent magnet to stator core, therefore the motor of the patent No. (application number) CN03135499.8 patent to operate.
Summary of the invention:
Technical problem to be solved by this invention is the DC brushless motor providing a kind of novelty for above-mentioned prior art present situation.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of DC brushless motor, there is external rotor, internal stator, comprise end cap, bearing and annex, it is characterized in that: its spline axle of the internal stator of described DC brushless motor is provided with iron core, the outside diameter wall of described iron core is arranged the straight line insulation sliver being embedded with and circumferentially arranging, the two ends of described straight line insulation sliver are respectively provided with the annular collector ring of insulation, the two ends of described straight line insulation sliver and collector ring are connected to each other and form cage modle conduction rack, two described collector rings are connected with electromagnetic wire, described electromagnetic wire passes from the wire guide spline axle, the internal perisporium of described external rotor tubular wheel hub is provided with annular permanent magnet, the magnetic of described annular permanent magnet is characterized in that the periphery of ring is unified N magnetic pole, inner circumferential S magnetic pole, or its periphery is unified S magnetic pole, inner circumferential N magnetic pole.
In order to reliable and stable, prevent annular permanent magnet axially displaced, the two ends of described annular permanent magnet, the inwall of tubular wheel hub are provided with prevents moving gear, jump ring.
Arrange in described iron core and be embedded with winding coil.May be used for generating.
Compared with prior art, the invention has the advantages that: eliminate the brush of direct current machine in prior art, commutator, Hall element position transducer, electronic commutation apparatus, structure is simple, can carry out the rotating speed of motor with stepless speed regulation by the method for direct regulation voltage or electric current, and the direction can exchanging electric current input makes motor forward and backward.
Accompanying drawing illustrates:
In Fig. 1, A is rotor schematic diagram, and B is stator schematic diagram.
What Fig. 2 drew is schematic diagram.
Embodiment:
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
Example one:
As shown in Figure 1; A kind of DC brushless motor, has external rotor, internal stator, comprises end cap, bearing and annex, it is characterized in that:
Its spline axle (1) of the internal stator of described DC brushless motor is provided with iron core (2), the outside diameter wall of described iron core (2) is arranged straight line insulation sliver (3) being embedded with and circumferentially arranging, the two ends of described straight line insulation sliver (3) are respectively provided with the annular collector ring (4) of insulation, the two ends of described straight line insulation sliver (3) and collector ring (4) are connected to each other and form cage modle conduction rack, described two collector rings (4) are connected with electromagnetic wire (5), described electromagnetic wire (5) passes from the wire guide spline axle (1), the internal perisporium of described external rotor tubular wheel hub (7) is provided with annular permanent magnet (8), the magnetic of described annular permanent magnet (8) is characterized in that the periphery of ring is unified N magnetic pole, inner circumferential S magnetic pole, or its periphery is unified S magnetic pole, inner circumferential N magnetic pole.
In order to reliable and stable, prevent annular permanent magnet (8) axially displaced, the two ends of described annular permanent magnet (8), the inwall of tubular wheel hub (7) are provided with prevents moving gear, jump ring (9).
The described inner setting of iron core (2) is embedded with winding coil.May be used for generating.
In FIG; 6, bearing limiting block, 10, screw.
Example two:
Its principle with have brushless motor identical, just the role of armature and magnetic pole is exchanged, utilize annular permanent magnet (8) that armature design is become stator, pole design becomes rotor.As shown in Figure 2, magnetic field due to rotor adopts annular permanent magnet (8), the magnetic characteristic in its magnetic field is the periphery of annular permanent magnet (8) is unified N magnetic pole or S magnetic pole, therefore the magnetic flux of rotor field forms magnetic circuit from annular permanent magnet (8) periphery through two ends and inner circumferential, when the two ends collector ring (4) of the cage modle conduction rack of stator switches on power, electric current flows into from one end collector ring (4) and flows out from other end collector ring (4) through straight line insulation sliver (3), straight line insulation sliver (3) energising produces the magnetic line of force around straight line insulation sliver (3), the magnetic line of force of straight line sliver (3) and the unified magnetic pole of annular permanent magnet (8) inner circumferential utilize the mutually exclusive principle of like pole, utilize the repulsive force of electromagnetism, repulsion makes rotor (8, 7) operate.
Compared with prior art, the invention has the advantages that: eliminate the brush of direct current machine in prior art, commutator and Hall element position transducer, electronic commutation apparatus, structure is simple, can carry out the rotating speed of motor with stepless speed regulation by the method for direct regulation voltage or electric current, and the direction can exchanging electric current input makes motor forward and backward.Can be widely used in electric motor car.
Claims (3)
1. a DC brushless motor, there is external rotor, internal stator, comprise end cap, bearing and annex, it is characterized in that: its spline axle (1) of the internal stator of described DC brushless motor is provided with iron core (2), the outside diameter wall of described iron core (2) is arranged straight line insulation sliver (3) being embedded with and circumferentially arranging, the two ends of described straight line insulation sliver (3) are respectively provided with the annular collector ring (4) of insulation, the two ends of described straight line insulation sliver (3) and collector ring (4) are connected to each other and form cage modle conduction rack, described two collector rings (4) are connected with electromagnetic wire (5), described electromagnetic wire (5) passes from the wire guide spline axle (1), the internal perisporium of described external rotor tubular wheel hub (7) is provided with annular permanent magnet (8), the magnetic of described annular permanent magnet (8) is characterized in that the periphery of ring is unified N magnetic pole, inner circumferential S magnetic pole, or its periphery is unified S magnetic pole, inner circumferential N magnetic pole.
2. a kind of DC brushless motor according to claim 1, it is characterized in that: in order to reliable and stable, prevent annular permanent magnet (8) axially displaced, the two ends of described annular permanent magnet (8), the inwall of tubular wheel hub (7) are provided with prevents moving gear, jump ring (9).
3. a kind of DC brushless motor according to claim 1, is characterized in that: the described inner setting of iron core (2) is embedded with winding coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410057048.6A CN104852544A (en) | 2014-02-14 | 2014-02-14 | Direct-current brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410057048.6A CN104852544A (en) | 2014-02-14 | 2014-02-14 | Direct-current brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104852544A true CN104852544A (en) | 2015-08-19 |
Family
ID=53851969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410057048.6A Pending CN104852544A (en) | 2014-02-14 | 2014-02-14 | Direct-current brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104852544A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115864748A (en) * | 2023-02-28 | 2023-03-28 | 三谷科技(东莞)有限公司 | Power generation heat dissipation type direct current brushless motor |
-
2014
- 2014-02-14 CN CN201410057048.6A patent/CN104852544A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115864748A (en) * | 2023-02-28 | 2023-03-28 | 三谷科技(东莞)有限公司 | Power generation heat dissipation type direct current brushless motor |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150819 |
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| WD01 | Invention patent application deemed withdrawn after publication |