CN201717763U - Brushless motor - Google Patents
Brushless motor Download PDFInfo
- Publication number
- CN201717763U CN201717763U CN2009202614638U CN200920261463U CN201717763U CN 201717763 U CN201717763 U CN 201717763U CN 2009202614638 U CN2009202614638 U CN 2009202614638U CN 200920261463 U CN200920261463 U CN 200920261463U CN 201717763 U CN201717763 U CN 201717763U
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- China
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- electric machine
- pcb board
- brushless electric
- magnetic conduction
- coil
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Abstract
The utility model provides a brushless motor, which comprises a stator, a rotor, a PCB board and a housing, wherein the stator is provided with a bottom board, the bottom board is provided with coils, the rotor is provided with a magnetic ring alternately formed by N pole and S pole, and the PCB board is provided with magnetic conduction sheets located in the areas of orthogonal projection of each coils. Compared with the prior art, the utility model uses the magnetic conduction sheets mounted on the PCB board to effectively solve the problem of the product start dead point, and has high efficiency, and does not damage the stability of the product.
Description
[technical field]
The utility model relates to a kind of motor, especially a kind of brushless electric machine.
[background technology]
Along with the development of permanent magnetism new material, microelectric technique, automatic control technology and power electronic technology, brushless electric machine obtains significant progress.Brushless electric machine utilizes electronic commutation to replace traditional mechanical commutation, it relies on dependable performance, do not have wearing and tearing forever, failure rate is low, and volume is little, the efficient advantages of higher,, develop rapidly to Aero-Space, medical treatment, information, household electrical appliances and industrial automation field gradually by initial military field.
Please join shown in Figure 3ly, it comprises the brushless electric machine of correlation technique 100 stator 11, rotor 12, rotation axis 13, base 14, is fixed on the stator 11 and with respect to the coil 110 of the axis symmetric arrangement of stator 1.When to main coil 110 energising, rotor 12 is subjected to the equilibrant force that coil 110 applies easily and can't starts under ad-hoc location, the problem at dead point occurs starting.For solving the problem that starts the dead point, the base that the Chinese patent CN 201204533Y that announced on March 4th, 2009 adopts is that permeability magnetic material is made, and perforate on the inner surface of base.After brushless electric machine stopped operating, rotor was subjected under the effect of base plate 41 to its attraction of permeability magnetic material, and last rotor 12 stops avoids starting the position at dead point, thereby avoided being parked in the dead point and poor starting when causing start next time.
Yet perforate on base plate does not utilize the stability of product, and its effect of avoiding starting the dead point is not high yet.
Therefore, be necessary to provide a kind of new brushless electric machine to overcome above-mentioned shortcoming.
[utility model content]
The technical problem that the utility model need solve provides a kind of brushless electric machine that can effectively solve the function admirable of the problem at startup dead point and the response speed that the raising product starts.
According to above-mentioned technical problem, designed a kind of brushless electric machine, comprise stator, rotor, PCB plate and shell, described stator is provided with base plate, described base plate is provided with coil, described rotor is provided with the magnet ring that is alternately formed by N, the S utmost point, is provided with the magnetic conduction sheet in the zone that lays respectively at each coil orthographic projection on described pcb board.
Further improve as the utility model, on described pcb board, be provided with the counterbore of location magnetic conduction sheet.
Further improve as the utility model, described pcb board is parallel with described stator.
Further improve as the utility model, described coil is 4, interval 60 degree between the center line of adjacent windings.
Further improve as the utility model, described magnetic conduction sheet is 4, and the angle that the center line of the magnetic conduction sheet that the center line of each coil is corresponding with it forms is between 0～5 °, and described angle the best is 5 °.
The utility model utilization is installed in magnetic conduction sheet on the pcb board can effectively solve the problem that product starts the dead point, compared with prior art, and the utility model efficient height, and can not destroy the stability of product.
[description of drawings]
Fig. 1 is the cross-sectional schematic of the utility model brushless electric machine;
Fig. 2 is the projection relation figure of the utility model pcb board and coil;
Fig. 3 is the perspective exploded view of correlation technique brushless electric machine.
[embodiment]
The utility model is described in further detail below in conjunction with drawings and embodiments.
As shown in Figure 1, the utility model brushless electric machine 200 comprises stator 21, rotor 22, rotation axis 23, pcb board 25 and shell 24.Shell 24 is made up of upper casing 240 and base plate 241 and is formed spatial accommodation, is used for housing stator, rotor, rotation axis, pcb board.
This stator 21 comprises base plate 210, and four coils 26 arranged side by side successively are installed on the base plate 210, and as shown in Figure 2, the interval is 60 ° between the center line of adjacent windings.
This rotor 22 is provided with the magnet ring (not shown) that is alternately formed by N, the S utmost point.
This pcb board 25 is used to product to realize that circuit connects, and is provided with a driver 250 thereon, for coil provides the signal of telecommunication.Also be provided with four magnetic conduction sheets 27 on this PCB25, as shown in Figure 2, each magnetic conduction sheet lays respectively in the zone of each coil orthographic projection, promptly in the zone perpendicular to the projection of pcb board.And the formed angle of the center line of the magnetic conduction sheet that the center line of each coil is corresponding with it is between 0～5 °, and in the present embodiment, this angle is 5 °.For additionally not increasing the height of product, on pcb board, also be provided with the counterbore 251 that is not less than magnetic conduction sheet thickness, magnetic conduction sheet 27 is positioned in this counterbore 251.Pcb board 25 is between stator 21 and base plate 241, and is parallel with stator and base plate, and like this, magnetic conduction sheet can make the magnetic line of force of permanent magnet just perpendicular to the effective area of coil, helps improving the driving force of product, thereby improves the response speed that product starts.
The magnetic conduction sheet that the utility model utilizes PCB to be provided with attracts rotor, when brushless electric machine stops operating, rotor can be subjected to the attraction of magnetic conduction sheet to it, rotor can be rotated further under self inertia, rest on the position of avoiding starting the dead point at last, promptly rest on and be convenient on the position that brushless electric machine starts next time, start the dead point and poor starting when causing start next time thereby avoid being parked in.
Above-described only is execution mode of the present utility model; should be pointed out that for the person of ordinary skill of the art at this, under the prerequisite that does not break away from the utility model creation design; can also make improvement, but these all belong to protection range of the present utility model.
Claims (6)
1. brushless electric machine, comprise stator, rotor, pcb board and shell, described stator is provided with base plate, described base plate is provided with coil, described rotor is provided with the magnet ring that is alternately formed by N, the S utmost point, it is characterized in that: be provided with the magnetic conduction sheet in the zone that lays respectively at each coil orthographic projection on described pcb board.
2. brushless electric machine according to claim 1 is characterized in that: the counterbore that is provided with the location magnetic conduction sheet on described pcb board.
3. brushless electric machine according to claim 1 is characterized in that: described pcb board is parallel with described stator.
4. brushless electric machine according to claim 1 is characterized in that: described coil is 4, interval 60 degree between the center line of adjacent windings.
5. brushless electric machine according to claim 4 is characterized in that: described magnetic conduction sheet is 4, and the angle that the center line of the magnetic conduction sheet that the center line of each coil is corresponding with it forms is between 0～5 °.
6. brushless electric machine according to claim 5 is characterized in that: described angle is 5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202614638U CN201717763U (en) | 2009-12-14 | 2009-12-14 | Brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202614638U CN201717763U (en) | 2009-12-14 | 2009-12-14 | Brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201717763U true CN201717763U (en) | 2011-01-19 |
Family
ID=43463770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202614638U Expired - Lifetime CN201717763U (en) | 2009-12-14 | 2009-12-14 | Brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201717763U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103973044A (en) * | 2013-01-24 | 2014-08-06 | 建准电机工业股份有限公司 | Motor easy to start and base thereof |
-
2009
- 2009-12-14 CN CN2009202614638U patent/CN201717763U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103973044A (en) * | 2013-01-24 | 2014-08-06 | 建准电机工业股份有限公司 | Motor easy to start and base thereof |
| CN103973044B (en) * | 2013-01-24 | 2016-08-31 | 建准电机工业股份有限公司 | Motor easy to start and base thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170525 Address after: Singapore Ang Mo Kio 65 Street No. 10 techpoint Building 1 floor, No. 8 Co-patentee after: AAC Acoustic Technologies (Changzhou) Co., Ltd. Patentee after: AAC Technologies (Singapore) Co., Ltd. Address before: Wujin Nanxiashu town Jiangsu city Changzhou province 213167 Co-patentee before: AAC Acoustic Technologies (Shenzhen) Co., Ltd. Patentee before: AAC Acoustic Technologies (Changzhou) Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110119 |
|
| CX01 | Expiry of patent term |