CN2386570Y - Brushless DC. electric motor - Google Patents
Brushless DC. electric motor Download PDFInfo
- Publication number
- CN2386570Y CN2386570Y CN 99242613 CN99242613U CN2386570Y CN 2386570 Y CN2386570 Y CN 2386570Y CN 99242613 CN99242613 CN 99242613 CN 99242613 U CN99242613 U CN 99242613U CN 2386570 Y CN2386570 Y CN 2386570Y
- Authority
- CN
- China
- Prior art keywords
- ring
- permanent magnets
- rotor
- utility
- steel loop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052742 iron Inorganic materials 0.000 abstract 2
- 230000004907 flux Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The utility model relates to a brushless DC motor, which is formed by that a plurality of permanent magnets are installed at the inner part of a rotor core. The utility model comprises a T-shaped stator iron, and a ring-shaped rotors, wherein, the T-shaped stator iron is wound with a multi-phase stator coil; the ring-shaped rotor is provided with a plurality of permanent magnets. The utility model is characterized in that two side sections of the front part of a cross section of each of the permanent magnets are in a convex arc shape, and the middle section is in a concave arc shape; a plurality of the permanent magnets are uniformly arranged on a steel ring, and a round ring shape is formed. The length of end parts of the T-shaped stator core are provided with equal width, gaps are positioned between the end parts and the ring-shaped rotor which corresponds to the permanent magnets.
Description
The utility model has related to a kind of a plurality of permanent magnet and has been contained in rotor core inside and the brshless DC motor of formation.
The brshless DC motor of prior art, comprise and have for the stator core of ring status and the multi phase stator in stator core with by a plurality of permanent magnets are packed into that rotor core constituted, the rotor that rotatably is provided with the state that has predetermined air gap with inner circumferential surface in the part of the space of said stator iron core rotates the driving rotor by switching on successively in stator coil.The corresponding stator core for ring status in each permanent magnet end of rotor, its each easy to be magnetized direction partly distributes along the radiation direction of certain point that makes permanent magnet center of curvature side for the center.With the magnetic flux width in the air gap between increase stator and rotor, and then increase driving torque.But this technology is seeking to reduce cogging torque, reduces vibration and noise and exists not enough.
The purpose of this utility model is that a kind of reduction cogging torque will be provided, and reduces the brshless DC motor of vibration and noise.
The purpose of this utility model is achieved by the following technical solution: the utility model comprises T shape stator core that is wound with the multi phase stator coil and the ring-shaped rotor that a plurality of permanent magnets are housed, it is characterized in that described each permanent magnet, the front part sides section of its section is a convex, interlude is an arcs of recesses, a plurality of permanent magnets are evenly distributed on the steel loop, form the garden ring-type; Described T shape stator core tip lengths is wide, and the ring-shaped rotor of the corresponding permanent magnet in its end has the space between the two.
The utility model can also be connected the rear portion of each its section of permanent magnet with steel loop, and is evenly distributed on the steel loop ring-type wall.Steel loop ring-type wall is relative with above-mentioned rotor magnet and be disposed at position with the stator opposition side.
Description of drawings of the present utility model is as follows:
Fig. 1 is rotor of the present utility model and stator structure figure.
Fig. 2 is the sectional drawing of magnet of the present utility model.
Fig. 3 is rotor case of the present utility model and magnet structure figure.
Fig. 4 is a stator chip structure chart of the present utility model.
Below in conjunction with accompanying drawing the utility model is described in further detail: as shown in Figure 1, have for the stator core 1 of ring status and the multi phase stator in stator core 1 and constituted by rotor core 3 that a plurality of permanent magnets 2 are packed into, the rotor 5 that rotatably is provided with the state that has predetermined air gap with inner circumferential surface in the part of the space of said stator iron core 1 rotates driving rotor 5 by switching on successively in stator coil.The corresponding stator core 1 for ring status in each permanent magnet 2 end of rotor 5, its each easy to be magnetized direction partly distributes along the radiation direction of certain point that makes permanent magnet 2 center of curvature sides for the center.With the magnetic flux width in the air gap between increase stator and rotor, and then increase driving torque.The rear portion of each permanent magnet 2 its sections is connected with steel loop 3, and is evenly distributed on the steel loop 3 ring-type walls.Steel loop 3 ring-type walls and above-mentioned rotor magnet 2 are relative and be disposed at position with stator 1 opposition side.As shown in Figure 2, the section structure of permanent magnet 2 is that the front part sides section is a convex, and interlude is an arcs of recesses.As shown in Figure 3, a plurality of permanent magnets 2 are evenly distributed on the steel loop 3, form the garden ring-type, and one deck plastic casing 4, the structure that each rotor magnet 2, steel loop 3 and plastic casing 4 are integral by the resin that is arranged on ring-type wall periphery part are arranged outside the steel loop 3.As shown in Figure 4, the stator chip structure is that T shape stator core tip lengths is wide, and the ring-shaped rotor of the corresponding permanent magnet in its end has the space between the two.
Claims (3)
1, a kind of brshless DC motor, comprise T shape stator core that is wound with the multi phase stator coil and the ring-shaped rotor that a plurality of permanent magnets are housed, it is characterized in that described each permanent magnet, the front part sides section of its section is a convex, interlude is an arcs of recesses, a plurality of permanent magnets are evenly distributed on the steel loop, form the garden ring-type; Described T shape stator core tip lengths is wide, and the ring-shaped rotor of the corresponding permanent magnet in its end has the space between the two.
2, brshless DC motor according to claim 1 is characterized in that described each permanent magnet, and the rear portion of its section is connected with steel loop, and is evenly distributed on the steel loop ring-type wall.
3, brshless DC motor according to claim 1 and 2 is characterized in that steel loop ring-type wall is relative with above-mentioned rotor magnet and is disposed at position with the stator opposition side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99242613 CN2386570Y (en) | 1999-09-02 | 1999-09-02 | Brushless DC. electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99242613 CN2386570Y (en) | 1999-09-02 | 1999-09-02 | Brushless DC. electric motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2386570Y true CN2386570Y (en) | 2000-07-05 |
Family
ID=34029179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99242613 Expired - Fee Related CN2386570Y (en) | 1999-09-02 | 1999-09-02 | Brushless DC. electric motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2386570Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101277037B (en) * | 2007-02-12 | 2011-08-24 | 三星电子株式会社 | Brushless direct current motor, compressor and air conditioner having the same |
| CN102412693A (en) * | 2010-09-21 | 2012-04-11 | 台达电子工业股份有限公司 | Fan and motor thereof |
| TWI426681B (en) * | 2010-09-21 | 2014-02-11 | Delta Electronics Inc | Fan and motor thereof |
| CN103840570A (en) * | 2014-02-21 | 2014-06-04 | 广东威灵电机制造有限公司 | Motor magnetic tiles and motor provided with motor magnetic tiles |
-
1999
- 1999-09-02 CN CN 99242613 patent/CN2386570Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101277037B (en) * | 2007-02-12 | 2011-08-24 | 三星电子株式会社 | Brushless direct current motor, compressor and air conditioner having the same |
| CN102412693A (en) * | 2010-09-21 | 2012-04-11 | 台达电子工业股份有限公司 | Fan and motor thereof |
| TWI426681B (en) * | 2010-09-21 | 2014-02-11 | Delta Electronics Inc | Fan and motor thereof |
| CN102412693B (en) * | 2010-09-21 | 2014-02-26 | 台达电子工业股份有限公司 | Fan and its motor |
| US9369017B2 (en) | 2010-09-21 | 2016-06-14 | Delta Electronics, Inc. | Fan and motor thereof |
| CN103840570A (en) * | 2014-02-21 | 2014-06-04 | 广东威灵电机制造有限公司 | Motor magnetic tiles and motor provided with motor magnetic tiles |
| CN103840570B (en) * | 2014-02-21 | 2017-11-24 | 广东威灵电机制造有限公司 | Motor magnetic tile and the motor with the motor magnetic tile |
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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 |