CN205725243U - A kind of external rotor electric machine - Google Patents
A kind of external rotor electric machine Download PDFInfo
- Publication number
- CN205725243U CN205725243U CN201620346702.XU CN201620346702U CN205725243U CN 205725243 U CN205725243 U CN 205725243U CN 201620346702 U CN201620346702 U CN 201620346702U CN 205725243 U CN205725243 U CN 205725243U
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- CN
- China
- Prior art keywords
- electric machine
- drive end
- bearing bracket
- bonnet
- end bearing
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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 - Fee Related
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Abstract
This utility model relates to a kind of external rotor electric machine, and including the stator module being arranged in electric machine casing, rotor assembly and rotating shaft, electric machine casing is made up of drive end bearing bracket and bonnet；Drive end bearing bracket is plate-shaped, and stator module is arranged on the rear side of drive end bearing bracket；Bonnet front end is provided with opening, and rotor assembly is arranged on bonnet medial wall, and rotating shaft one end is arranged in the geometric center of bonnet inner bottom, other end passes drive end bearing bracket, opening tips upside down on the rear side of drive end bearing bracket, makes bonnet cover stator module, rotor assembly and rotating shaft, has space between drive end bearing bracket and bonnet.This utility model can significantly simplify the structure of electric machine casing, and the parts of motor are less, and volume is less, assembles easier, makes material and cost of labor reduce.
Description
Technical field
This utility model relates to a kind of external rotor electric machine.
Background technology
External rotor electric machine is highly developed product, the electric machine casing of the external rotor electric machine in conventional art is collectively formed by protecgulum 1 and bonnet 2, other parts of external rotor electric machine, as stator module, rotor assembly, rotor cover 4 are installed in the inner chamber of electric machine casing, and bonnet 2(or protecgulum 1) on also need to partial installation and have bearing block 3(to install bearing), the parts such as end cap (so that motor is arranged on miscellaneous part).The external rotor electric machine that this structure is assembled into, parts are more, and installation step is many, cause Material Cost, cost of labor to reduce.Accordingly, it would be desirable to improve further.
Summary of the invention
The purpose of this utility model is the deficiency overcoming above-mentioned prior art to exist, and provide a kind of design simple, rational in infrastructure, parts are few, assembling is simple, material and the low external rotor electric machine of cost of labor.
The purpose of this utility model is achieved in that
A kind of external rotor electric machine, including the stator module being arranged in electric machine casing, rotor assembly and rotating shaft, its architectural feature is, described electric machine casing is made up of drive end bearing bracket and bonnet；Drive end bearing bracket is plate-shaped, and stator module is arranged on the rear side of drive end bearing bracket；Bonnet front end is provided with opening, and rotor assembly is arranged on bonnet medial wall, and rotating shaft one end is arranged in the geometric center of bonnet inner bottom, other end passes drive end bearing bracket, opening tips upside down on the rear side of drive end bearing bracket, makes bonnet cover stator module, rotor assembly and rotating shaft, has space between drive end bearing bracket and bonnet.
The position that on rear side of described drive end bearing bracket, corresponding rotating shaft passes is provided with the bearing cartridge that one extends backward, and bearing cartridge is internally installed least one set shaft bearing, and the axle body of rotating shaft is connected with shaft bearing, and stator module is arranged on the outside of bearing cartridge.
On front side of described drive end bearing bracket, the position of corresponding bearing cartridge is arranged with some grades of steps.
Described step maximum radial dimension is less than the opening radial dimension of bonnet.
Described step upper cover is connected to oil sealing end cap.
The outer rim of described drive end bearing bracket is provided with the installation flange extended to rear side one.
Described installation flange is provided with shell.
Described drive end bearing bracket surface is provided with some installing holes.
Support of shaking the head at least is installed on described installing hole.
Described drive end bearing bracket is made by metal or plastics, and bonnet is made by metal or plastics.
The beneficial effects of the utility model are as follows:
By above-mentioned improvement, significantly simplifying the structure of electric machine casing, the parts of motor are less, and volume is less, assembles easier, make material and cost of labor reduce.
This utility model can be applicable to various direct current generator, and can be applied to various field, blower fan, fan, exhaust fan etc..
Accompanying drawing explanation
Fig. 1 is the assembly structure figure (section view) of tradition external rotor electric machine.
Fig. 2 is the assembling stereogram of this utility model one embodiment.
Fig. 3 is the assembly structure figure (section view) of this utility model one embodiment.
Fig. 4 is the exploded view of this utility model one embodiment.
Fig. 5 is the another exploded view of this utility model one embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawings and this utility model is further described by embodiment.
Seeing Fig. 2-Fig. 5, this external rotor electric machine, including the stator module 10 being arranged in electric machine casing, rotor assembly 20 and rotating shaft 21, electric machine casing is made up of drive end bearing bracket 30 and bonnet 40；Drive end bearing bracket 30 is plate-shaped, and stator module 10 is arranged on the rear side of drive end bearing bracket 30；Bonnet 40 front end is provided with opening, rotor assembly 20 is arranged on bonnet 40 medial wall, rotating shaft 21 one end is arranged in the geometric center of bonnet 40 inner bottom, other end passes drive end bearing bracket 30, use when meeting its transmission, opening tips upside down on the rear side of drive end bearing bracket 30, bonnet 40 is made to cover stator module 10, rotor assembly 20 and rotating shaft 21, significantly simplify the structure of electric machine casing, the parts of motor are less, volume (thickness) is less, assemble easier, material and cost of labor is made to reduce, space is had between drive end bearing bracket 30 and bonnet 40, bonnet 40 is when rotating, friction will not be produced with drive end bearing bracket 30, this gap lengths can be 3-5mm, auxiliary heat dissipation can also be played, dust-proof effect.External rotor electric machine in use, is typically mounted on the shell of the devices such as blower fan, fan, exhaust fan, and it uses environment the most not have too many dust, and therefore, dust does not interferes with service life and the using effect of external rotor electric machine.
Further, the position that on rear side of drive end bearing bracket 30, corresponding rotating shaft 21 passes is provided with the bearing cartridge 31 that one extends backward, drive end bearing bracket 30 can be one-body molded by conventional machining modes such as integrated punching, integrated injection molding, integrated die-castings with bearing cartridge 31, processing technique is simple, yields is high, concordance is good, bearing cartridge 31 is internally installed least one set shaft bearing 50(the present embodiment totally two groups), the axle body of rotating shaft 21 is connected with shaft bearing 50, stator module 10 is arranged on the outside of bearing cartridge 31, when satisfied holding rotating shaft 21 operates, good concentricity, the technique effect that will not rock.
Further, on front side of drive end bearing bracket 30, the position of corresponding bearing cartridge 31 is arranged with some grades of step 32(the present embodiment two-stage step 32 altogether), step 32 can increase substantially the mechanical strength of drive end bearing bracket 30, wherein, step 32 maximum radial dimension is less than the opening radial dimension of bonnet 40, make step 32 can block the space between drive end bearing bracket 30 and bonnet 40 further, improve dust-proof effect further；Step 32 upper cover is connected to oil sealing end cap 60, prevents lubricating oil from leaking outside, is favorably improved service life.
Further, the outer rim of drive end bearing bracket 30 is provided with the installation flange 33 extended to rear side one, installs flange 33 and can install with the shell of the device such as blower fan, fan, exhaust fan, additionally it is possible to improves the mechanical strength of drive end bearing bracket 30 further.
Further, drive end bearing bracket 30 surface is provided with some installing holes 34；At least being provided with support 70 of shaking the head on installing hole 34, this technical scheme is particularly suitable for applications on the field of fan, makes fan have the effect shaken the head.
Further, drive end bearing bracket 30, bonnet 40 all can be made by metal or plastics, and the present embodiment is preferably made by metal.
Above-mentioned for preferred version of the present utility model, of the present utility model ultimate principle, principal character and of the present utility model advantage have been shown and described.Those skilled in the art is it should be recognized that this utility model is not restricted to the described embodiments; described in above-described embodiment and description, principle of the present utility model is simply described; on the premise of without departing from this utility model spirit and scope, this utility model also has various changes and modifications, in the range of these changes and improvements both fall within claimed this utility model.This utility model claims scope and is defined by appending claims and equivalent thereof.
Claims (10)
1. an external rotor electric machine, including the stator module (10) being arranged in electric machine casing, rotor assembly (20) and rotating shaft (21), it is characterised in that described electric machine casing is made up of drive end bearing bracket (30) and bonnet (40)；Drive end bearing bracket (30) is plate-shaped, and stator module (10) is arranged on the rear side of drive end bearing bracket (30)；Bonnet (40) front end is provided with opening, rotor assembly (20) is arranged on bonnet (40) medial wall, rotating shaft (21) one end is arranged in the geometric center of bonnet (40) inner bottom, other end passes drive end bearing bracket (30), opening tips upside down on the rear side of drive end bearing bracket (30), make bonnet (40) cover stator module (10), rotor assembly (20) and rotating shaft (21), between drive end bearing bracket (30) and bonnet (40), have space.
External rotor electric machine the most according to claim 1, it is characterized in that, the position that the corresponding rotating shaft (21) of described drive end bearing bracket (30) rear side passes is provided with the bearing cartridge (31) that one extends backward, bearing cartridge (31) is internally installed least one set shaft bearing (50), the axle body of rotating shaft (21) is connected with shaft bearing (50), and stator module (10) is arranged on the outside of bearing cartridge (31).
External rotor electric machine the most according to claim 2, it is characterised in that the position of the corresponding bearing cartridge (31) in described drive end bearing bracket (30) front side is arranged with some grades of steps (32).
External rotor electric machine the most according to claim 3, it is characterised in that described step (32) maximum radial dimension is less than the opening radial dimension of bonnet (40).
External rotor electric machine the most according to claim 3, it is characterised in that described step (32) upper cover is connected to oil sealing end cap (60).
External rotor electric machine the most according to claim 1, it is characterised in that the outer rim of described drive end bearing bracket (30) is provided with the installation flange (33) extended to rear side one.
External rotor electric machine the most according to claim 6, it is characterised in that described installation flange (33) is provided with shell.
External rotor electric machine the most according to claim 1, it is characterised in that described drive end bearing bracket (30) surface is provided with some installing holes (34).
External rotor electric machine the most according to claim 8, it is characterised in that be at least provided with support of shaking the head (70) on described installing hole (34).
10., according to the external rotor electric machine described in any one of claim 1-9, it is characterised in that described drive end bearing bracket (30) is made by metal or plastics, bonnet (40) is made by metal or plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620346702.XU CN205725243U (en) | 2016-04-22 | 2016-04-22 | A kind of external rotor electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620346702.XU CN205725243U (en) | 2016-04-22 | 2016-04-22 | A kind of external rotor electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205725243U true CN205725243U (en) | 2016-11-23 |
Family
ID=57295564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620346702.XU Expired - Fee Related CN205725243U (en) | 2016-04-22 | 2016-04-22 | A kind of external rotor electric machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205725243U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105743262A (en) * | 2016-04-22 | 2016-07-06 | 麦永冲 | External rotor motor |
-
2016
- 2016-04-22 CN CN201620346702.XU patent/CN205725243U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105743262A (en) * | 2016-04-22 | 2016-07-06 | 麦永冲 | External rotor motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 Termination date: 20180422 |