CN209250381U - External rotor electric machine - Google Patents
External rotor electric machine Download PDFInfo
- Publication number
- CN209250381U CN209250381U CN201920037748.7U CN201920037748U CN209250381U CN 209250381 U CN209250381 U CN 209250381U CN 201920037748 U CN201920037748 U CN 201920037748U CN 209250381 U CN209250381 U CN 209250381U
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- CN
- China
- Prior art keywords
- extension edge
- inner ring
- electric machine
- seat
- bearing
- 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
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Abstract
The utility model relates to a kind of external rotor electric machines, including stator module and rotor assembly；If stator module includes stator seat and dry bearing；Stator seat includes pedestal and inner ring；Rotor assembly includes rotator seat, and rotator seat includes basal disc and the first extension edge and the second extension edge；First extension edge and the second extension edge interval are arranged, the end of the end abutment bearing of first extension edge, second extension edge is arranged inner ring, so as to form accommodating chamber between basal disc and the first extension edge, the second extension edge, inner ring and bearing, accommodating chamber is for filling lubricating grease.Above-mentioned external rotor electric machine, structure is simple, the first extension edge and the second extension edge are equipped on rotator seat, space between basal disc and the first extension edge, the second extension edge, inner ring and bearing forms accommodating chamber, the accommodating chamber is for filling lubricating grease, lubricating grease blocks the second extension edge and inner ring, can prevent extraneous rainwater or dust from entering by the insulating effect of lubricating grease, play protective action to bearing.
Description
Technical field
The utility model relates to driving motor technical fields, more particularly to a kind of external rotor electric machine.
Background technique
The dynamical system of general unmanned plane mostly uses external rotor electric machine, and unmanned plane during flying needs round-the-clock running when monitoring,
Therefore the motor working environment of dynamical system becomes more complicated, rainwater, dust and mild corrosion substance there may be.
Because of the reason of unmanned plane self structure and various ventilation and heat demands, the motor of dynamical system is usually independently of unmanned plane
It except protective structures, is influenced by outer-rotor structure, the motor of dynamical system can not be made into totally-enclosed mode, for motor inside
The bearing portion that structure member can not carry out very effective protection, especially motor is even more main damaged objects.
Utility model content
Based on this, the utility model provides a kind of external rotor electric machine, and structure is simple, and it is anti-to carry out effective waterproof to bearing
Dirt protection, extends the service life of bearing.
In order to realize the purpose of this utility model, the utility model adopts the following technical solution:
A kind of external rotor electric machine, the rotor assembly including stator module and the flexible connection stator module；The stator
If component includes stator seat and the dry bearing that is installed in the stator seat；The stator seat includes pedestal and from the pedestal
The inner ring that inner peripheral extends towards the rotor assembly direction；The bearing is installed on the inside of the inner ring；The rotor set
Part includes rotator seat, and the rotator seat includes basal disc and extends from the basal disc inner peripheral towards the stator module direction
The first extension edge and the second extension edge；First extension edge and second extension edge interval are arranged, and described first extends
The end of bearing described in the end abutment on side, second extension edge are arranged the inner ring, so that the basal disc and described first
Accommodating chamber is formed between extension edge, second extension edge, the inner ring and the bearing, the accommodating chamber is for filling lubrication
Rouge；When rotator seat rotation, the junction that the lubricating grease is moved to second extension edge and the inner ring is sealed
It is stifled.
Above-mentioned external rotor electric machine, structure is simple, and the first extension edge and the second extension edge, basal disc and the are equipped on rotator seat
Space between one extension edge, the second extension edge, inner ring and bearing forms accommodating chamber, which moistens for filling lubricating grease
Consistent lubricant blocks the second extension edge and inner ring, can prevent extraneous rainwater or dust from entering by the insulating effect of lubricating grease, right
Bearing plays protective action.
The described second inner wall extended abuts the outer wall of the inner ring in one of the embodiments,.
There is isolation ring along the axial direction also projection of the inner ring on the inner wall of the inner ring in one of the embodiments,；
The quantity of the bearing is two, and two bearings are located at the opposite sides of the isolation ring.
The stator seat further includes from the middle part of the pedestal towards the rotor assembly direction in one of the embodiments,
The centre circle of extension, the outer ring extended from the pedestal outer peripheral edge towards the rotor assembly direction and interval are connected in described
Several reinforcing ribs between circle and the centre circle.
The stator module further includes the winding for being arranged the stator seat in one of the embodiments,；The winding packet
It includes bracket and uniform intervals is wound in several coils on the bracket；The bracket is arranged the centre circle, the bracket and institute
Centre circle is stated to be fixedly connected.
In one of the embodiments, the rotor assembly further include uniform intervals be installed on it is several on the rotator seat
Magnetic sheet；The magnetic sheet corresponds to the coil.
The rotator seat further includes uniformly being connected to the several of the basal disc outboard peripheries to insert in one of the embodiments,
Foot and the shell for being arranged the pin；Each magnetic sheet is installed between the adjacent pin, and the shell is arranged described
The outside of magnetic sheet；The side of the shell abuts the rotator seat, and the other side abuts the outer ring.
The external rotor electric machine further includes connecting the stator module and the rotor assembly in one of the embodiments,
Spindle assemblies；The spindle assemblies include main shaft, the retaining ring for being connected to described main shaft one end, abut the main shaft other end
The fastener of washer and the connection main shaft；The main shaft connects after successively wearing the basal disc, the bearing and the washer
The fastener, the washer and the fastener are respectively positioned on the inside of the inner ring.
The retaining ring abuts the rotator seat backwards to the one side of the stator module in one of the embodiments,.
The stator module further includes the support plate of stator seat described in bearer connection, the load in one of the embodiments,
The middle part projection of plate has boss, and the boss corresponds to the inner ring；The boss and the fastener separation are arranged.
Detailed description of the invention
Fig. 1 is the stereoscopic schematic diagram of the external rotor electric machine of one better embodiment of the utility model；
Fig. 2 is the stereoscopic schematic diagram at another visual angle of external rotor electric machine shown in FIG. 1；
Fig. 3 is the decomposition diagram of external rotor electric machine shown in FIG. 1；
Fig. 4 is the stereoscopic schematic diagram at another visual angle of the stator seat in external rotor electric machine shown in Fig. 3；
Fig. 5 is the stereoscopic schematic diagram at another visual angle of the rotator seat in external rotor electric machine shown in Fig. 3；
Fig. 6 is the cross-sectional view of external rotor electric machine shown in FIG. 1；
Fig. 7 is the enlarged diagram at circle A shown in Fig. 6.
Attached drawing mark explanation:
10- stator module, 11- support plate, 110- boss, 12- stator seat, 13- bearing, 14- winding, 141- bracket, 142-
Coil, 15- pedestal, 16- inner ring, 17- centre circle, the outer ring 18-, 19- isolation ring；
20- rotor assembly, 21- rotator seat, 22- magnetic sheet, 23- basal disc, the first extension edge of 24-, the second extension edge of 25-, 26-
Pin, 27- shell, 28- lubricating grease；
30- spindle assemblies, 31- main shaft, 32- retaining ring, 33- washer, 34- fastener.
Specific embodiment
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The preferred embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms in fact
It is existing, however it is not limited to embodiment described herein.On the contrary, purpose of providing these embodiments is makes public affairs to the utility model
The understanding for opening content is more thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.
Please refer to Fig. 1 to Fig. 7, be one better embodiment of the utility model external rotor electric machine, including stator module 10,
It is flexibly connected the rotor assembly 20 of stator module 10 and the spindle assemblies 30 of connecting stator component 10 and rotor assembly 20.
The stator module 10 include support plate 11, connect support plate 11 stator seat 12, be installed on it is several in stator seat 12
Bearing 13 and the winding 14 for being arranged stator seat 12.The pedestal 15 of stator seat 12 including setting annular in shape, from 15 inner peripheral of pedestal
The inner ring 16 that extends towards 20 direction of rotor assembly, the centre circle 17 extended towards 20 direction of rotor assembly from the middle part of pedestal 15, from
If outer ring 18 and interval that 15 outer peripheral edge of pedestal extends towards 20 direction of rotor assembly are connected between inner ring 16 and centre circle 17
Dry reinforcing rib.In the present embodiment, along it, axially also projection has isolation ring 19 on the inner wall of inner ring 15.In the present embodiment,
The quantity of bearing 13 is two, and two bearings 13 are installed on the inside of inner ring 16, and two bearings 13 are located at the phase of isolation ring 19
To two sides.
Further, winding 14 includes that bracket 141 and uniform intervals are wound in several coils 142 on bracket 141.?
In the present embodiment, the setting annular in shape of bracket 141, bracket 141 is arranged centre circle 17, and bracket 141 is fixedly connected with centre circle 17, and props up
The outer diameter of frame 141 is less than the outer diameter of pedestal 15.
Further, in the present embodiment, the also projection of the middle part of support plate 11 has boss 110, the corresponding inner ring of boss 110
16, to realize being located by connecting for support plate 11 and stator seat 12.
The rotor assembly 20 includes that rotator seat 21 and uniform intervals are installed on several magnetic sheets 22 on rotator seat 21.Turn
The basal disc 23 of stroma 21 including setting annular in shape prolongs from 23 inner peripheral of basal disc towards 10 direction of stator module extends first
It stretches side 24 and the second extension edge 25, uniform intervals is connected to several pins 26 of 23 outboard peripheries of basal disc and is arranged pin 26
Shell 27.Each magnetic sheet 22 is installed between adjacent pin 26, and the corresponding coil 142 of magnetic sheet 22, shell 27 is sheathed on magnetic sheet 22
Outside.Further, the side of shell 27 abuts rotator seat 21, and the other side abuts outer ring 18.
In the present embodiment, the first extension edge 24 and the second extension edge 25 interval are arranged, and the end of the first extension edge 24 is supported
The end of joint bearing 13, the second extension edge 25 are arranged inner ring 16, and specifically, the inner wall of the second extension edge 25 abuts the outer of inner ring 16
Wall.Further, the space between basal disc 23 and the first extension edge 24, the second extension edge 25, inner ring 16 and bearing 13, which is formed, holds
Receive chamber, the accommodating chamber is for filling lubricating grease 28.The present embodiment external rotor electric machine work when, rotator seat 21 rotate, due to from
Mental power function, lubricating grease is mobile and is piled up in the junction of the second extension edge 25 and inner ring 16, and lubricating grease 28 blocks second at this time
Gap between extension edge 25 and inner ring 16, since lubricating grease 28 has certain viscosity, lubricating grease 28 be will not flow out, by profit
The insulating effect of consistent lubricant 28 can prevent extraneous rainwater or dust from entering, and play protective action to bearing 13.
The spindle assemblies 30 include main shaft 31, are connected to 31 one end of main shaft retaining ring 32 abuts main shaft 31 other end
Washer 33 and the fastener 34 for connecting main shaft 31.Main shaft 31 successively wears securing member after basal disc 23, bearing 13 and washer 33
34, washer 33 is respectively positioned on the inside of the inner ring 16 with fastener 34, and retaining ring 32 abuts rotator seat 21 backwards to stator module 10
On one side, realize that rotor assembly 20 is docked with the matching of stator module 10.Fastener 34 and the interval of boss 110 are arranged, so that main shaft
There are gaps between 31 and support plate 11.
Above-mentioned external rotor electric machine, structure is simple, and the first extension edge 24 and the second extension edge 25, base are equipped on rotator seat 21
Space between disk 23 and the first extension edge 24, the second extension edge 25, inner ring 16 and bearing 13 forms accommodating chamber, which uses
In filling lubricating grease 28, lubricating grease 28 blocks the second extension edge 25 and inner ring 16, can prevent by the insulating effect of lubricating grease 28
Extraneous rainwater or dust enters, and plays protective action to bearing 13.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of external rotor electric machine, which is characterized in that the rotor assembly including stator module and the flexible connection stator module；
If the stator module includes stator seat and the dry bearing that is installed in the stator seat；The stator seat include pedestal and from
The inner ring that the pedestal inner peripheral extends towards the rotor assembly direction；The bearing is installed on the inside of the inner ring；Institute
Stating rotor assembly includes rotator seat, and the rotator seat includes basal disc and from the basal disc inner peripheral towards the stator module
The first extension edge and the second extension edge that direction extends；First extension edge and second extension edge interval are arranged, described
The end of bearing described in the end abutment of first extension edge, second extension edge are arranged the inner ring so that the basal disc with
Accommodating chamber is formed between first extension edge, second extension edge, the inner ring and the bearing, the accommodating chamber is used for
Fill lubricating grease；When rotator seat rotation, the lubricating grease is moved to the connection of second extension edge and the inner ring
Place is blocked.
2. external rotor electric machine according to claim 1, which is characterized in that the described second inner wall extended abuts the inner ring
Outer wall.
3. external rotor electric machine according to claim 1, which is characterized in that along the axis of the inner ring on the inner wall of the inner ring
There is isolation ring to also projection；The quantity of the bearing is two, and two bearings are located at the opposite sides of the isolation ring.
4. external rotor electric machine according to claim 1, which is characterized in that the stator seat further includes from the middle part of the pedestal
Extend towards the centre circle of rotor assembly direction extension, from the pedestal outer peripheral edge towards the rotor assembly direction outer
Circle and interval are connected to several reinforcing ribs between the inner ring and the centre circle.
5. external rotor electric machine according to claim 4, which is characterized in that the stator module further includes being arranged the stator
The winding of seat；The winding includes bracket and uniform intervals are wound in several coils on the bracket；The bracket is arranged institute
Centre circle is stated, the bracket is fixedly connected with the centre circle.
6. external rotor electric machine according to claim 5, which is characterized in that the rotor assembly further includes uniform intervals installation
In several magnetic sheets on the rotator seat；The magnetic sheet corresponds to the coil.
7. external rotor electric machine according to claim 6, which is characterized in that the rotator seat further include uniformly be connected to it is described
Several pins of basal disc outboard peripheries and the shell for being arranged the pin；Each magnetic sheet is installed on the adjacent pin
Between, the shell is arranged the outside of the magnetic sheet；The side of the shell abuts the rotator seat, and the other side abuts described outer
Circle.
8. external rotor electric machine according to claim 1, which is characterized in that further include connecting the stator module and described turn
The spindle assemblies of sub-component；The spindle assemblies include main shaft, the retaining ring for being connected to described main shaft one end, to abut the main shaft another
The washer of one end and the fastener of the connection main shaft；The main shaft successively wears the basal disc, the bearing and the washer
After connect the fastener, the washer and the fastener are respectively positioned on the inside of the inner ring.
9. external rotor electric machine according to claim 8, which is characterized in that the retaining ring abuts the rotator seat backwards to described
The one side of stator module.
10. external rotor electric machine according to claim 8, which is characterized in that the stator module further includes bearer connection institute
The support plate of stator seat is stated, the middle part projection of the support plate has boss, and the boss corresponds to the inner ring；The boss with it is described
Fastener separation setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920037748.7U CN209250381U (en) | 2019-01-08 | 2019-01-08 | External rotor electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920037748.7U CN209250381U (en) | 2019-01-08 | 2019-01-08 | External rotor electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209250381U true CN209250381U (en) | 2019-08-13 |
Family
ID=67536153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920037748.7U Expired - Fee Related CN209250381U (en) | 2019-01-08 | 2019-01-08 | External rotor electric machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209250381U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117040171A (en) * | 2023-04-28 | 2023-11-10 | 东莞市小强电子科技有限公司 | High stable external rotor brushless motor |
-
2019
- 2019-01-08 CN CN201920037748.7U patent/CN209250381U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117040171A (en) * | 2023-04-28 | 2023-11-10 | 东莞市小强电子科技有限公司 | High stable external rotor brushless motor |
| CN117040171B (en) * | 2023-04-28 | 2024-04-16 | 东莞市小强电子科技有限公司 | High stable external rotor brushless motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 526073 floor 1, building 11, innovation and entrepreneurship Park, Guanyan Avenue, Dinghu District, Zhaoqing City, Guangdong Province Patentee after: Guangdong century South Technology Co.,Ltd. Address before: 518101 Kobit Science Park, No. 1 Yihe Road, Shilong Community, Shiyan Street, Baoan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN CENTURY SOUTHERN TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190813 Termination date: 20220108 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |