CN2847668Y - Outer rotor brushless motor - Google Patents
Outer rotor brushless motor Download PDFInfo
- Publication number
- CN2847668Y CN2847668Y CN 200520067043 CN200520067043U CN2847668Y CN 2847668 Y CN2847668 Y CN 2847668Y CN 200520067043 CN200520067043 CN 200520067043 CN 200520067043 U CN200520067043 U CN 200520067043U CN 2847668 Y CN2847668 Y CN 2847668Y
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- motor
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Abstract
The utility model discloses an outer rotor brushless motor. The aim of the utility model is to provide an outer rotor brushless motor which has the advantages of positioning accuracy of magnetic sheets, firm and reliable cementation of the magnetic sheets and high magnetic permeability. The utility model comprises a stator assembly (1), a rotor assembly and a conducting wire (6), wherein the rotor assembly comprises a shell cover (2), a shell (3), a plurality of magnetic sheets (4) and an output shaft (5). The shell cover (2) is fixedly connected with the shell (3), the output shaft (5) is fixedly connected with the shell cover (2), the inner surface of the shell (3) is provided with a plurality of longitudinal convex edges (30) which are uniformly distributed along a circumferential direction, a plurality of grooves (31) are formed between the adjacent longitudinal convex edges (30), and the magnetic sheets (4) are respectively embedded into the grooves (31) for cementation and fixation. The utility model can be used for the technical field of a motor.
Description
Technical field
The utility model relates to a kind of outer rotor brushless motor.
Background technology
DC motor has obtained using widely in motion control field with its good torque characteristics, but common DC motor is owing to need mechanical commutation and brush, poor reliability, need often to safeguard, and produce electromagnetic interference during commutation, noise is big, has influenced the further application of DC motor in control system.In order to overcome the shortcoming that mechanical commutation brings, the brushless electric machine that replaces mechanical commutation with the electronics commutation arises at the historic moment.The patent that people such as nineteen fifty-five U.S. D.Harrison have applied for replacing with the transistor commutation circuit mechanical brush first indicates the birth of modern brushless motor.And the brushless DC motor of electronics commutation really enters the practical stage, is the release at classical brushless DC motor of MAC in 1978 and driver thereof.Afterwards, in the world brushless DC motor is carried out deep research, successively be developed into square wave brushless electric machine and sinusoidal wave dc brushless motor.20 for many years, and along with the particularly development of high-power switch device of permanent magnetism new material, microelectric technique, automatic control technology and power electronic technology, brushless motor has obtained significant progress.Brushless DC motor has not only kept traditional DC motor good dynamic and static governor control characteristics, and simple in structure, reliable, be easy to control, it is used from initial war industry, develops rapidly to Aero-Space, medical treatment, information, household electrical appliances and industrial automation field.Brushless DC motor has not been the direct current machine that specially refers to have the electronics commutation, but general reference has the electronics commutated motor that brush DC motor external behavior is arranged.
DC Brushless Motor generally is made up of electronics commutation circuit, rotor position detection circuit and motor body three parts, the electronics commutation circuit generally is made up of control section and drive part, and the detection of rotor-position is generally finished with position transducer, during work, each power tube in the orderly triggering drive circuit of the motor rotor position that controller records according to position transducer, carry out the orderly change of current, to drive DC motor.
Brushless electric machine can be divided into inner-rotor brushless motor, outer rotor brushless motor by the relative position of stator and rotor.Existing outer rotor brushless motor comprises rotor assembly, output shaft, stator module, comprise rotor assembly casing, the cabinet cover of fixedlying connected with casing, several bondings are fixed in casing inner surface along circumferential uniform magnetic sheet, and output shaft is fixedlyed connected with cabinet cover.As shown in Figure 3, the casing inner surface of existing external rotor electric machine is the smooth face of cylinder, and magnetic sheet directly bonding is fixed on the face of cylinder, this bonding fixed form, the magnetic sheet location is inaccurate, and the magnetic sheet bonding is not firm, between the magnetic sheet side fully by air insulated, no magnetic conductor, so permeability is lower.
So existing technology has the following disadvantages: the magnetic sheet location is inaccurate, and the magnetic sheet bonding is not firm, and permeability is lower.
The utility model content
Technical problem to be solved in the utility model is the deficiency that overcomes on the prior art, and the outer rotor brushless motor that a kind of magnetic sheet accurate positioning, magnetic sheet bonding is firm, permeability is higher is provided.
The technical scheme that the utility model adopted is: the utility model comprises stator module, rotor assembly, lead, described rotor assembly comprises cabinet cover, casing, several magnetic sheets, output shaft, described cabinet cover and described casing are fixedly connected, described output shaft and described cabinet cover are fixedly connected, described casing inner surface is provided with several along circumferential uniform vertical fin, constitute several grooves between each adjacent described vertical fin, several described magnetic sheets embed respectively to bond in several described grooves and fix.
The beneficial effects of the utility model are: because casing inner surface described in the utility model is provided with several along circumferential uniform vertical fin, constitute several grooves between each adjacent described vertical fin, several described magnetic sheets embed respectively to bond in several described grooves and fix, the position of described groove is determined when making described casing, during assembling, only need and to get final product in the described groove of described magnetic sheet bonding embedding, not only magnetic sheet accurate positioning, and described magnetic sheet fixed-site, can be along circumferentially moving, and a bottom surface and two sides of described magnetic sheet all bond with described casing, and described magnetic sheet can not come off; There is described vertical fin to exist between each described magnetic sheet, can increases permeability, improve magnetic efficiency, so the accurate positioning of the utility model magnetic sheet, that magnetic sheet bonds is firm, permeability is higher.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the assembly structure schematic diagram of the utility model casing and magnetic sheet;
Fig. 3 is the assembly structure schematic diagram of prior art outer rotor brushless motor casing and magnetic sheet;
Fig. 4 is the structural representation of the utility model casing.
Embodiment
As Fig. 1, Fig. 2, shown in Figure 4, the utility model comprises stator module 1, rotor assembly, lead 6, described rotor assembly comprises cabinet cover 2, casing 3,14 magnetic sheets 4, output shaft 5, described cabinet cover 2 is fixedly connected with described casing 3, described output shaft 5 is fixedly connected with described cabinet cover 2, described casing 3 inner surfaces are provided with circumferentially uniform vertical fin 30 of 14 edges, 30 of each adjacent described vertical fins constitute 14 grooves 31,14 described magnetic sheets 4 embed respectively to bond in 14 described grooves 31 to be fixed, described output shaft 5 is by two bearings 7,9 rotate with described stator module 1 is connected, the afterbody of described output shaft 5 is fixedly connected by screw 8 and described cabinet cover 2, the head of described output shaft 5 is by circlip 10, packing ring 11 and described bearing 9 axial location, certainly, described magnetic sheet 4, the number of described vertical fin 30 is not limited to 14, but both quantity is consistent.
The accurate positioning of the utility model magnetic sheet, magnetic sheet bonding is firm, permeability is higher.
The utility model can be widely used in machine field.
Under the situation that does not break away from the present utility model thought, all application the utility model specifications and accompanying drawing content and the various equivalences of being done change, and all reason is with being contained in the claim scope of the present utility model.
Claims (1)
1, a kind of outer rotor brushless motor, comprise stator module (1), rotor assembly, lead (6), described rotor assembly comprises cabinet cover (2), casing (3), several magnetic sheets (4), output shaft (5), described cabinet cover (2) is fixedly connected with described casing (3), described output shaft (5) is fixedly connected with described cabinet cover (2), it is characterized in that: described casing (3) inner surface is provided with several along circumferential uniform vertical fin (30), constitute several grooves (31) between each adjacent described vertical fin (30), several described magnetic sheets (4) embed respectively to bond in several described grooves (31) and fix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520067043 CN2847668Y (en) | 2005-11-09 | 2005-11-09 | Outer rotor brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520067043 CN2847668Y (en) | 2005-11-09 | 2005-11-09 | Outer rotor brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2847668Y true CN2847668Y (en) | 2006-12-13 |
Family
ID=37513090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520067043 Expired - Fee Related CN2847668Y (en) | 2005-11-09 | 2005-11-09 | Outer rotor brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2847668Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110739786A (en) * | 2018-07-20 | 2020-01-31 | 中车株洲电力机车研究所有限公司 | hub motor rotor structure |
| CN110798007A (en) * | 2019-11-18 | 2020-02-14 | 沈阳工业大学 | Outer rotor structure of permanent magnet direct-drive wind driven generator |
-
2005
- 2005-11-09 CN CN 200520067043 patent/CN2847668Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110739786A (en) * | 2018-07-20 | 2020-01-31 | 中车株洲电力机车研究所有限公司 | hub motor rotor structure |
| CN110798007A (en) * | 2019-11-18 | 2020-02-14 | 沈阳工业大学 | Outer rotor structure of permanent magnet direct-drive wind driven generator |
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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 |