CN205693496U - A kind of fan electromotor - Google Patents
A kind of fan electromotor Download PDFInfo
- Publication number
- CN205693496U CN205693496U CN201620596407.XU CN201620596407U CN205693496U CN 205693496 U CN205693496 U CN 205693496U CN 201620596407 U CN201620596407 U CN 201620596407U CN 205693496 U CN205693496 U CN 205693496U
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- rotating shaft
- case
- stator case
- stator
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Abstract
This utility model provides a kind of fan electromotor, belongs to technical field of motors.It solve the existing problem that fan electromotor frictional force is big, noise is big.This fan electromotor, including tubular stator case, the outside of stator case is provided with stator core, rotating shaft it is equipped with in stator case, rotating shaft is stretched out one end of stator case and is arranged with rotor case, rotor case is provided with the rotor magnet being positioned at stator core outer shroud, bearing it is fixed with in stator case, rotating shaft is located in this bearing, it is provided with in stator case and turns the hitch structure axially away from the motion of rotor case direction for traction, between stator case and rotating shaft, be additionally provided with the position limiting structure for limiting rotating shaft shift position.This utility model has advantages such as running well, low cost of manufacture, frictional force are little, noise is little.
Description
Technical field
This utility model belongs to technical field of motors, relates to a kind of fan electromotor.
Background technology
Along with popularizing of refrigerator air cooling technology, refrigerator fan motor arises at the historic moment, and generally uses bottom armature spindle in industry
Riveting copper ring structure, then coordinate with bottom armature spindle with metallic gasket, make fan blade stator core and outer rotor during air-out
Magnet coordinates operating.But use and this construction increases the frictional force between pad and bearing face, cause motor noise big, and
Manufacturing cost is high, and processing technique is complicated.
Summary of the invention
The purpose of this utility model is to there are the problems referred to above for existing technology, it is proposed that one runs well, manufactures
The fan electromotor of low cost.
The purpose of this utility model can be realized by following technical proposal:
This fan electromotor, including tubular stator case, the outside of described stator case is provided with stator core, described
Being equipped with rotating shaft in stator case, described rotating shaft is stretched out one end of stator case and is arranged with rotor case, described rotor case
It is provided with the rotor magnet being positioned at stator core outer shroud, it is characterised in that in described stator case, be fixed with bearing, above-mentioned
Rotating shaft is located in this bearing, is provided with and turns leading axially away from the motion of rotor case direction for traction in described stator case
Guiding structure, is additionally provided with the position limiting structure for limiting rotating shaft shift position between described stator case and rotating shaft.
In above-mentioned fan electromotor, described stator case is provided with and stator case inside one end of rotor case
Integrated positioning seat, above-mentioned rotating shaft is resisted against on this positioning seat, and described stator case is away from one end of rotor case
Being provided with the end cap stretching in stator case, the other end of above-mentioned bearing is resisted against on end cap.
In above-mentioned fan electromotor, described stator case is provided with positioning step, described end cap has and is somebody's turn to do
The annular gear edge that positioning step is equipped with, is provided with the shrinkage pool of rotor case side, above-mentioned traction in described end cap
Structure is located in this shrinkage pool.
In above-mentioned fan electromotor, described hitch structure includes the Rare-Earth Magnetic for attracting rotating shaft being located in shrinkage pool
Ferrum, described rare-earth magnet is cylindrical and is coaxially disposed with rotating shaft, and rotating shaft described under the effect of described rare-earth magnet is begun
It is resisted against the side being provided with rare-earth magnet eventually, between described rare-earth magnet and rotating shaft, is provided with lubrication system.In order to make Rare-Earth Magnetic
Ferrum reaches the more preferable captivation of countershaft, and rotating shaft uses Cr material to make.
In above-mentioned fan electromotor, described lubrication system includes the ball head being positioned at rotating shaft near rare-earth magnet side
With the Graphite pad being located in shrinkage pool, described Graphite pad is resisted against on rare-earth magnet, and above-mentioned ball head is resisted against graphite
On pad.Graphite pad can contact with ball head, can effectively drop coefficient of friction, improves service life.
In above-mentioned fan electromotor, described position limiting structure includes that one end is resisted against on bearing its other end and is resisted against end
The limited location snap ring covered and the annular stop draw-in groove being equipped with limited location snap ring being located in rotating shaft, in described limited location snap ring
Portion is formed with endoporus, and the diameter of described endoporus is less than the diameter of rotating shaft, and the diameter of described endoporus is more than annular stop draw-in groove
Diameter.
In above-mentioned fan electromotor, described limited location snap ring has the opening connected with endoporus, the width of described opening
Degree is less than the diameter of annular stop draw-in groove.That is limited location snap ring is split ring, and limited location snap ring has elasticity, can carry out circumference
Open, it is ensured that limited location snap ring, in the retractility of installation process, opens the width diameter more than annular stop draw-in groove of after-opening,
Can directly snap in annular stop draw-in groove, the width of annular stop draw-in groove can effectively limit rotating shaft axial float, with reality simultaneously
Existing stator, rotor coordinate in motor, and prevent the fan blade in rotating shaft from dropping.
During installation, limited location snap ring is nested in rotating shaft, bearing is nested in rotating shaft and is encased in the lump in stator case,
Subsequently rare-earth magnet and Graphite pad are pressed in the shrinkage pool of end cap, are encased in stator case with end cap, fix
Rear end cap and bearing can effectively limit limited location snap ring axially-movable, finally load onto rotor case, fan blade etc. and form fan blade assembly.
After general assembly completes, there is relative dislocation when rotor magnet is static with stator core, rotor magnet is permanent magnet, with stator core
Have a relative captivation, therefore there is a lateral attraction forces F1, designed by blade structure, after operating fan blade air-out be to
Inner side, rotor case arranges stress pulling force F2 round about, and rare-earth magnet countershaft captivation is F3, calculates three kinds of power
Balance, makes F1+F3 ＞ F2 in theory, and fan, under this frame for movement, can produce a kind of magnetic when stator core energising operating
Pulling force, makes whole fan blade in the horizontal toward stress, thus eliminates the axial float of rotating shaft.
Compared with prior art, this fan electromotor has the advantage that
This structure cancels rotating shaft riveting copper ring, uses rare-earth magnet to coordinate with the ball head of rotating shaft, by rare-earth magnet pair
The captivation of rotating shaft, it is achieved click on the operating that laterally suspends, during making fan blade air-out, rotor case cooperation runs well, it is ensured that turn
Axle is close to a direction all the time, eliminates axial float, optimizes electric machine structure, reduces frictional force, reduces noise, saves simultaneously
Raw material, optimizes motor process, reduces cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of preferred embodiment that this utility model provides.
Fig. 2 is the partial enlarged drawing in Fig. 1 that this utility model provides at A.
In figure, 1, stator case；11, stator core；12, positioning seat；13, positioning step；2, rotating shaft；21, ball head；
22, annular stop draw-in groove；3, rotor case；31, rotor magnet；4, bearing；5, end cap；51, annular gear edge；52, shrinkage pool；6, dilute
Soil Magnet；7, Graphite pad；8, limited location snap ring.
Detailed description of the invention
The following is specific embodiment of the utility model and combine accompanying drawing, the technical solution of the utility model is made further
Description, but this utility model is not limited to these embodiments.
Fan electromotor as shown in Figure 1, including tubular stator case 1, the outside of stator case 1 is provided with stator core
11, it is equipped with rotating shaft 2 in stator case 1, rotating shaft 2 is stretched out one end of stator case 1 and is arranged with rotor case 3, on rotor case 3
It is provided with the rotor magnet 31 being positioned at stator core 11 outer shroud.As it is shown in figure 1, be fixed with bearing 4 in stator case 1, rotating shaft 2 is worn
It is located in this bearing 4, is provided with for drawing rotating shaft 2 to the hitch structure moved away from rotor case 3 direction in stator case 1,
The position limiting structure for limiting rotating shaft 2 shift position it is additionally provided with between stator case 1 and rotating shaft 2.
As it is shown in figure 1, stator case 1 be provided with inside one end of rotor case 3 integrated with stator case 1 fixed
Position seat 12, rotating shaft 2 is resisted against on this positioning seat 12, and stator case 1 is provided with away from one end of rotor case 3 and stretches to stator case
End cap 5 in 1, the other end of bearing 4 is resisted against on end cap 5.
As it is shown in figure 1, be provided with positioning step 13 on stator case 1, end cap 5 have coordinate with this positioning step 13 and set
The annular gear put, along 51, is provided with the shrinkage pool 52 of rotor case 3 side in end cap 5, hitch structure is located in this shrinkage pool 52.
As it is shown in figure 1, hitch structure includes the rare-earth magnet 6 for attracting rotating shaft 2 being located in shrinkage pool 52, rare-earth magnet
6 is cylindrical and be coaxially disposed with rotating shaft 2, and the effect lower rotary shaft 2 at rare-earth magnet 6 is resisted against all the time and is provided with rare-earth magnet 6
Side, is provided with lubrication system between rare-earth magnet 6 and rotating shaft 2.In order to make rare-earth magnet 6 reach the more preferable captivation of countershaft 2,
Rotating shaft 2 uses Cr material to make.
As in figure 2 it is shown, lubrication system includes that being positioned at rotating shaft 2 near the ball head 21 of rare-earth magnet 6 side and is located at shrinkage pool
Graphite pad 7 in 52, Graphite pad 7 is resisted against on rare-earth magnet 6, and ball head 21 is resisted against on Graphite pad 7.Graphite pad
7 can contact with ball head 21, can effectively drop coefficient of friction, improve service life.
As in figure 2 it is shown, position limiting structure includes that one end is resisted against its other end on bearing 4 and is resisted against the limiting card on end cap 5
Ring 8 and the annular stop draw-in groove 22 being equipped with limited location snap ring 8 being located in rotating shaft 2, in the middle part of limited location snap ring 8 is formed
Hole, the diameter of endoporus is less than the diameter of rotating shaft 2, and the diameter of endoporus is more than the diameter of annular stop draw-in groove 22.
In the present embodiment, limited location snap ring 8 having the opening connected with endoporus, the width of opening is less than annular stop draw-in groove
The diameter of 22.That is limited location snap ring 8 is split ring, and limited location snap ring 8 has elasticity, can carry out circumference and open, it is ensured that limit
Position snap ring 8, in the retractility of installation process, opens the width diameter more than annular stop draw-in groove 22 of after-opening, can directly block
Entering annular stop draw-in groove 22, the width of annular stop draw-in groove 22 can effectively limit rotating shaft 2 axial float simultaneously, fixed to realize
Son, rotor coordinate in motor, and prevent the fan blade in rotating shaft 2 from dropping.
During installation, limited location snap ring 8 is nested in rotating shaft 2, bearing 4 is nested in rotating shaft 2 and is encased in stator case in the lump
In body 1, subsequently rare-earth magnet 6 and Graphite pad 7 are pressed in the shrinkage pool 52 of end cap 5, are encased in stator case with end cap 5
In body 1, fix rear end cap 5 and bearing 4 can effectively limit limited location snap ring 8 axially-movable, finally load onto rotor case 3, fan blade
Deng formation fan blade assembly.After general assembly completes, when rotor magnet 31 is static with stator core 11, there is relative dislocation, rotor magnet
31 is permanent magnet, has a relative captivation with stator core 11, therefore there is a lateral attraction forces F1, pass through blade structure
Design, after operating, fan blade air-out is to inner side, and rotor case 3 arranges stress pulling force F2 round about, rare-earth magnet 6 countershaft
2 captivations are F3, calculate three kinds of dynamic balances, make F1+F3 ＞ F2 in theory, and fan, under this frame for movement, works as stator
A kind of magnetic pull can be produced during iron core 11 energising operating, make whole fan blade in the horizontal toward stress, thus eliminate rotating shaft 2
Axial float.
Specific embodiment described herein is only to this utility model spirit explanation for example.This utility model institute
Belong to those skilled in the art described specific embodiment to make various amendment or supplement or use similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Claims (7)
1. a fan electromotor, including tubular stator case (1), the outside of described stator case (1) is provided with stator core
(11), being equipped with rotating shaft (2) in described stator case (1), described rotating shaft (2) is stretched out one end of stator case (1) and is arranged with
Rotor case (3), described rotor case (3) is provided with the rotor magnet (31) being positioned at stator core (11) outer shroud, its feature
Being, be fixed with bearing (4) in described stator case (1), above-mentioned rotating shaft (2) is located in this bearing (4), and described determines
It is provided with in sub-housing (1) for drawing rotating shaft (2) to the hitch structure moved away from rotor case (3) direction, described stator
The position limiting structure for limiting rotating shaft (2) shift position it is additionally provided with between housing (1) and rotating shaft (2).
A kind of fan electromotor the most according to claim 1, it is characterised in that described stator case (1) is near rotor case
Being provided with inside one end of body (3) and stator case (1) integrated positioning seat (12), it is fixed that above-mentioned rotating shaft (2) is resisted against this
On position seat (12), described stator case (1) is provided with, away from one end of rotor case (3), the end stretched in stator case (1)
Lid (5), the other end of above-mentioned bearing (4) is resisted against on end cap (5).
A kind of fan electromotor the most according to claim 2, it is characterised in that described stator case (1) is provided with location
Step (13), described end cap (5) has the annular gear being equipped with this positioning step (13) along (51), described end cap
(5) being provided with the shrinkage pool (52) of rotor case (3) side in, above-mentioned hitch structure is located in this shrinkage pool (52).
A kind of fan electromotor the most according to claim 3, it is characterised in that described hitch structure includes being located at shrinkage pool
(52) being used in attracts the rare-earth magnet (6) of rotating shaft (2), and described rare-earth magnet (6) is cylindrical and coaxial with rotating shaft (2)
Arranging, rotating shaft (2) described under the effect of described rare-earth magnet (6) is resisted against the side being provided with rare-earth magnet (6), institute all the time
It is provided with lubrication system between rare-earth magnet (6) and the rotating shaft (2) stated.
A kind of fan electromotor the most according to claim 4, it is characterised in that described lubrication system includes being positioned at rotating shaft
(2) near the ball head (21) of rare-earth magnet (6) side and the Graphite pad (7) be located in shrinkage pool (52), described graphite pads
Sheet (7) is resisted against on rare-earth magnet (6), and above-mentioned ball head (21) is resisted against on Graphite pad (7).
6. according to a kind of fan electromotor described in Claims 2 or 3 or 4 or 5, it is characterised in that described position limiting structure includes
One end be resisted against limited location snap ring (8) that bearing (4) its other end upper is resisted against on end cap (5) and be located in rotating shaft (2) with limit
The annular stop draw-in groove (22) that position snap ring (8) is equipped with, the middle part of described limited location snap ring (8) is formed with endoporus, described endoporus
Diameter less than the diameter of rotating shaft (2), and the diameter of described endoporus is more than the diameter of annular stop draw-in groove (22).
A kind of fan electromotor the most according to claim 6, it is characterised in that have with interior on described limited location snap ring (8)
The opening of hole connection, the width of described opening is less than the diameter of annular stop draw-in groove (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620596407.XU CN205693496U (en) | 2016-06-17 | 2016-06-17 | A kind of fan electromotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620596407.XU CN205693496U (en) | 2016-06-17 | 2016-06-17 | A kind of fan electromotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205693496U true CN205693496U (en) | 2016-11-16 |
Family
ID=57414948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620596407.XU Expired - Fee Related CN205693496U (en) | 2016-06-17 | 2016-06-17 | A kind of fan electromotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205693496U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914945A (en) * | 2016-06-23 | 2016-08-31 | 曾子斌 | Device for preventing axial endplay of motor |
| WO2019104646A1 (en) * | 2017-11-30 | 2019-06-06 | 深圳市大疆创新科技有限公司 | Motor structure and power assembly applied to unmanned aerial vehicle, and unmanned aerial vehicle |
-
2016
- 2016-06-17 CN CN201620596407.XU patent/CN205693496U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914945A (en) * | 2016-06-23 | 2016-08-31 | 曾子斌 | Device for preventing axial endplay of motor |
| WO2019104646A1 (en) * | 2017-11-30 | 2019-06-06 | 深圳市大疆创新科技有限公司 | Motor structure and power assembly applied to unmanned aerial vehicle, and unmanned aerial vehicle |
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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 |
Granted publication date: 20161116 Termination date: 20170617 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |