CN203278427U - DC brushless motor - Google Patents
DC brushless motor Download PDFInfo
- Publication number
- CN203278427U CN203278427U CN 201320279930 CN201320279930U CN203278427U CN 203278427 U CN203278427 U CN 203278427U CN 201320279930 CN201320279930 CN 201320279930 CN 201320279930 U CN201320279930 U CN 201320279930U CN 203278427 U CN203278427 U CN 203278427U
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- Prior art keywords
- brushless motor
- fixed
- rotor
- armature spindle
- controlled plate
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- 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 - Lifetime
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- Brushless Motors (AREA)
Abstract
The utility model provides a DC brushless motor which comprises a front end cover, a back end cover which is fixedly connected with the front end cover, a stator assembly, a rotor assembly and an electric control board which controls the rotor assembly. The stator assembly is fixed in the back end cover. The rotor assembly comprises a pair of bearings, a rotor shaft and a rotor magnet. The rotor assembly also comprises a rotor core. The rotor magnet is a ferrite magnetic ring. The rotor shaft is fixed in the front end cover and the back end cover through the bearings. The rotor iron core is fixed on the rotor shaft. The ferrite magnetic ring is bonded and fixed on the rotor iron core through glue. The DC brushless motor provided by the utility model has the advantages of simple structure, low cost, high performance and stability, convenient operation and low noise.
Description
Technical field
The utility model belongs to technical field of motors, more particularly, relates to a kind of dc brushless motor.
Background technology
Current, forced-ventilated and strong drum type water heater blower fan are by induction machine or driven by Brush-Less DC motor; Induction machine is low due to rotating speed, efficient is low, torsion is little, rotating speed is difficult for the characteristics such as adjusting, and the key technologies such as the water heater capacity of use induction machine and water temperature adjusting are difficult to break through; The characteristics such as direct current brushless motor speed is high, torsion is large, efficient is high, the easy adjusting of rotating speed, the water heater of use dc brushless motor can be made large capacity, water temperature can be regulated; From now on water heater toward large capacity, the intelligent direction development such as can regulate, dc brushless motor is undoubtedly the developing direction of the blower fan of forced-ventilated and strong drum type water heater.Yet current water heater brushless DC motor magnet uses magnetic sheet or moulds magnet, and the price that use is moulded magnet is high, performance is low; And with the defectives such as price is high, noise is large that have of magnetic sheet.
The utility model content
The purpose of this utility model is to solve above-mentioned prior art and knows deficiency, provides a kind of simple in structure, and cost is lower, and performance is high, the dc brushless motor that noise is low.
for achieving the above object, the technical solution adopted in the utility model is: a kind of dc brushless motor, it comprises front end housing, the rear end cap that is fixedly connected with described front end housing, stator module, rotor assembly and control the electric-controlled plate of described rotor assembly, described stator module is fixed in described rear end cap, described rotor assembly comprises pair of bearings, armature spindle, rotor magnet, described rotor assembly also comprises rotor core, described rotor magnet is ferrite bead, described armature spindle is fixed in described front end housing and described rear end cap by described bearing, described rotor core is fixed on described armature spindle, described ferrite bead is adhesively fixed on described rotor core by glue.
Further, also be provided with the Hall element of the magnetic fidle of end of the described ferrite bead of induction on described electric-controlled plate.
Particularly, fix for interference fit between described rotor core and described armature spindle or riveting is fixed.
Particularly, described ferrite bead is many magnetic poles, and each described magnetic pole distributes along even circumferential.
Further, described rotor assembly also comprises being arranged on described armature spindle and is used for preventing that described armature spindle is with respect to described bearing two snap rings of vibration vertically.
Particularly, described electric-controlled plate is fixed on described stator module.
More specifically, described stator module comprises Insulating frame, and described electric-controlled plate is fixed by snap on described Insulating frame.
Particularly, fix for interference fit between described stator module and described rear end cap.
Particularly, fix for riveting between described front end housing and described rear end cap or screw is fixed.
Further, also be provided with fin or thermal paste for heat conduction between the chip on described electric-controlled plate and described front end housing.
The beneficial effect of the dc brushless motor that the utility model provides is: compared with prior art, the rotor magnet of the utility model dc brushless motor is ferrite bead, at first, it is cheap that the cost ratio of ferrite bead is moulded magnetic, the Performance Ratio magnetic sheet of whole magnet ring stable, noise is low; Secondly, ferrite bead and rotor core are adhesively fixed by glue, can fine control amount of unbalance, and rotor does not need to do dynamic balancing also can guarantee the requirements such as motor oscillating, noise, saves the processing and manufacturing cost; In addition, glue be adhesively fixed make magnet ring not can due to and rotor core between coordinate interference to ftracture, come off greatly, thereby guarantee stablizing of product quality; To sum up, the utility model is simple in structure, and cost is lower, and stable performance is easy to operate, and noise is low.
Description of drawings
The dc brushless motor that Fig. 1 provides for the utility model embodiment partly cut open structural representation;
The sectional structure chart of the dc brushless motor rotor assembly that Fig. 2 provides for the utility model embodiment;
The front view of the dc brushless motor rotor assembly that Fig. 3 provides for the utility model embodiment.
Embodiment
In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Please in the lump referring to figs. 1 through Fig. 3, the existing dc brushless motor that the utility model is provided describes.the utility model dc brushless motor comprises front end housing 11, the rear end cap 12 that is fixedly connected with front end housing 11, stator module 2, rotor assembly 3, insulation spacer 5 and electric-controlled plate 4, wherein, can fix or screw is fixed for riveting between front end housing 11 and rear end cap 12, stator module 2 is fixed in rear end cap 12, in making, stator module 2 can be pressed into rear end cap 12 and fix by interference fit, rotor assembly 3 comprises pair of bearings 30, armature spindle 31, rotor magnet, rotor assembly 3 also comprises rotor core 33, rotor magnet is ferrite bead 32, armature spindle 31 is fixed in front end housing 11 and rear end cap 12 by bearing 30, rotor core 33 is fixed on armature spindle 31, can fix or riveting is fixed by interference fit between the two, ferrite bead 32 is adhesively fixed on rotor core 33 by glue, also be provided with the Hall element of the magnetic fidle of end of induction ferrite bead 32 on electric-controlled plate 4, electric-controlled plate 4 is fixedly connected with stator module 2, specifically, electric-controlled plate 4 can be fixed by snap on the Insulating frame of stator module 2, the magnetic fidle of end of Hall element inductiopn rotor magnet ring, induced signal is fed back to electric-controlled plate 4, 4 pairs of signals of electric-controlled plate process to control rotor speed etc.
The rotor magnet of the dc brushless motor that the utility model provides is ferrite bead 32, at first, it is cheap that the cost ratio of ferrite bead 32 is moulded magnetic, ferrite bead 32 fills into many magnetic poles by the magnetizing coil of special use, and each magnetic pole distributes along even circumferential, and the Performance Ratio magnetic sheet of whole magnet ring is stable, noise is low, easy to operate; Secondly, ferrite bead 32 and rotor core 33 are adhesively fixed by glue, can fine control amount of unbalance, and rotor does not need to do dynamic balancing also can guarantee the requirements such as motor oscillating, noise, thereby saves the processing and manufacturing cost; In addition, glue be adhesively fixed make ferrite bead 32 not can because of with rotor core 33 between coordinate interference large and ftracture, come off, thereby guarantee the stable of product quality and performance; To sum up, the utility model is simple in structure, and cost is lower, and performance is high and stable, and is easy to operate, and noise is low.
In order to prevent armature spindle 31 with respect to bearing 30 vibration vertically, rotor assembly 3 also on armature spindle 31 card establishes two snap rings 34, these two snap rings 34 lay respectively at the inboard of bearing 30.
Further, reliable in order to guarantee product quality and performances, also be provided with fin 6 or thermal paste for heat conduction between chip on electric-controlled plate 4 and front end housing 11, chip on electric-controlled plate 4 can contact with front end housing 11 by fin 6 or thermal paste like this, utilizes front end housing 11 thermal conductivity that the dissipation of heat of chip is gone out.
The above is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (10)
1. dc brushless motor, comprise front end housing, the rear end cap that is fixedly connected with described front end housing, stator module, rotor assembly and control the electric-controlled plate of described rotor assembly, described stator module is fixedly mounted in described rear end cap, described rotor assembly comprises pair of bearings, armature spindle, rotor magnet, it is characterized in that: described rotor assembly also comprises rotor core, described rotor magnet is ferrite bead, described armature spindle is fixed in described front end housing and described rear end cap by described bearing, described rotor core is fixed on described armature spindle, described ferrite bead is adhesively fixed on described rotor core by glue.
2. dc brushless motor as claimed in claim 1, is characterized in that: the Hall element that also is provided with the magnetic fidle of end of the described ferrite bead of induction on described electric-controlled plate.
3. dc brushless motor as claimed in claim 2 is characterized in that: fix for interference fit between described rotor core and described armature spindle or riveting is fixed.
4. dc brushless motor as claimed in claim 3, it is characterized in that: described ferrite bead is many magnetic poles, each described magnetic pole distributes along even circumferential.
5. dc brushless motor as claimed in claim 4 is characterized in that: described rotor assembly also comprises being arranged in and is used on described armature spindle preventing that described armature spindle is with respect to described bearing two snap rings of vibration vertically.
6. dc brushless motor as described in claim 1 to 5 any one, it is characterized in that: described electric-controlled plate is fixed on described stator module.
7. dc brushless motor as claimed in claim 6, it is characterized in that: described stator module comprises Insulating frame, described electric-controlled plate is fixed by snap on described Insulating frame.
8. dc brushless motor as claimed in claim 6, is characterized in that: fix for interference fit between described stator module and described rear end cap.
9. dc brushless motor as claimed in claim 6 is characterized in that: fix for riveting between described front end housing and described rear end cap or screw is fixed.
10. dc brushless motor as claimed in claim 6, is characterized in that: also be provided with fin or thermal paste for heat conduction between the chip on described electric-controlled plate and described front end housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320279930 CN203278427U (en) | 2013-05-21 | 2013-05-21 | DC brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320279930 CN203278427U (en) | 2013-05-21 | 2013-05-21 | DC brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203278427U true CN203278427U (en) | 2013-11-06 |
Family
ID=49508754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320279930 Expired - Lifetime CN203278427U (en) | 2013-05-21 | 2013-05-21 | DC brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203278427U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104037972A (en) * | 2014-06-20 | 2014-09-10 | 常州乐士雷利电机有限公司 | Heat dissipation structure of built-in chip of brushless motor |
| CN104935106A (en) * | 2014-03-21 | 2015-09-23 | 罗伯特·博世有限公司 | Motor with cooler |
| CN105958738A (en) * | 2016-06-16 | 2016-09-21 | 安乃达驱动技术（江苏）有限公司 | Integrated motor structure for electric vehicle and electric vehicle |
| CN106685112A (en) * | 2016-11-30 | 2017-05-17 | 广东威灵电机制造有限公司 | Motor rotor and motor |
| US9837867B2 (en) | 2014-07-21 | 2017-12-05 | Regal Beloit America, Inc. | Electric machine, rotor and associated method |
| CN108852062A (en) * | 2018-07-31 | 2018-11-23 | 浙江美茵电机有限公司 | A kind of broken wall cooking machine motor |
-
2013
- 2013-05-21 CN CN 201320279930 patent/CN203278427U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104935106A (en) * | 2014-03-21 | 2015-09-23 | 罗伯特·博世有限公司 | Motor with cooler |
| CN104935106B (en) * | 2014-03-21 | 2020-10-02 | 罗伯特·博世有限公司 | Electric machine with a cooling body |
| CN104037972A (en) * | 2014-06-20 | 2014-09-10 | 常州乐士雷利电机有限公司 | Heat dissipation structure of built-in chip of brushless motor |
| US9837867B2 (en) | 2014-07-21 | 2017-12-05 | Regal Beloit America, Inc. | Electric machine, rotor and associated method |
| CN105958738A (en) * | 2016-06-16 | 2016-09-21 | 安乃达驱动技术（江苏）有限公司 | Integrated motor structure for electric vehicle and electric vehicle |
| CN106685112A (en) * | 2016-11-30 | 2017-05-17 | 广东威灵电机制造有限公司 | Motor rotor and motor |
| CN108852062A (en) * | 2018-07-31 | 2018-11-23 | 浙江美茵电机有限公司 | A kind of broken wall cooking machine motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |
|
| CX01 | Expiry of patent term |