CN208062951U - A kind of dustproof construction of brushless motor - Google Patents
A kind of dustproof construction of brushless motor Download PDFInfo
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- CN208062951U CN208062951U CN201820462735.XU CN201820462735U CN208062951U CN 208062951 U CN208062951 U CN 208062951U CN 201820462735 U CN201820462735 U CN 201820462735U CN 208062951 U CN208062951 U CN 208062951U
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Abstract
The utility model is related to a kind of dustproof constructions of brushless motor, including casing, rotor and around the stator of the rotor, the rotor includes rotor mandrel and rotor core, the stator includes stator core and several coils, the stator core center is the rotor space for installing rotor core, stator core is equipped with several winding slots, and the coil is embedded in winding slot, and the coiling slot space between two neighboring coil forms airspace；Straight slot is equipped between winding slot and rotor space, the brushless motor is equipped with the isolating device for sealing rotor space.The utility model can effectively effectively prevent dust particle to enter the rotor space in stator, ensure the service life of stator and rotor, ensure motor normal work, while can also remove the dust particles on coil.
Description
Technical field
The utility model belongs to power tools technology field more particularly to a kind of dustproof construction of brushless motor.
Background technology
Power Tools Industries produce the environmental pollution next with carbon brush powder belt is reduced of high product service life, brushless motor to carry
It comes into being, still, brushless motor currently on the market is only applicable to use in the tools such as electric hand drill, electric hammer, and metal is cut
Cut class, grinding class tool cannot use or using effect is poor.The main reason for leading to this phenomenon is that brushless motor turns
Son is made with permanent magnetic iron, during use, since coil can generate heat when motor works, it usually needs installs wind to motor
Leaf radiates, and when fan blade rotates, can bring the dust particles outside motor in motor by heat dissipation channel into.As long as there is irony powder
Dirt, Ferrous particles enter, and will be adsorbed by rotor, and cannot take out, and the air gap finally resulted between rotor and stator is blocked,
Rotor wipes iron or even stuck burning machine.
Utility model content
In order to overcome drawbacks described above and expand product use scope, product use feeling is improved, the utility model provides
A kind of dustproof construction of brushless motor, to prevent the absorption of iron filings on rotor, dust.This device can make rotor core (interior
Containing strong magnet) and dust, iron filings keep apart, fan blade operating after, suck motor inside iron filings and dust, be limited in specified
Channel in, iron filings and dust are discharged by specified channel, will not be adsorbed on rotor core.
For the attainment of one's purpose, technical solution provided by the utility model is：
The utility model provides a kind of dustproof construction of brushless motor, including casing, rotor and determines around the rotor
Son, the rotor include rotor mandrel and rotor core, and the stator includes stator core and several coils, and described determines
Sub- iron core center is the rotor space for installing rotor core, and stator core is equipped with several winding slots, the coil
It is embedded in winding slot, the coiling slot space between two neighboring coil forms airspace；Between winding slot and rotor space
Equipped with straight slot, the brushless motor is equipped with the isolating device for sealing rotor space.
Preferably, the isolating device includes fan blade, wind loop, preceding dust-proof end plate, preceding insulating end plate, rear insulating end
Plate, rear dust-proof end plate and O-shaped rubber ring, the preceding insulating end plate and rear insulating end plate are separately mounted to the front and back of stator core
Both ends, the preceding dust-proof end plate are mounted on the outside of preceding insulating end plate, and the rear dust-proof end plate is mounted on rear insulating end plate
Outside；The fan blade is set in rotor mandrel front end, and wind loop is located at stator front end, wind loop be in fan blade and stator it
Between, circumferentially arranged with several and the one-to-one air-guiding hole of airspace on the wind loop, after O-shaped rubber ring is located at rotor
Winding slot and rotor space are isolated by end, preceding dust-proof end plate and rear dust-proof end plate cooperation, and fan blade and wind loop coordinate rotor
Forward end seal, casing and O-shaped rubber ring coordinate rotor back-end sealing.
Preferably, the dust-proof end plate includes circular ring cover and several spacers；The spacer is uniformly set to annulus
It covers, spacer, which is inserted into straight slot, makes winding slot be isolated with rotor space, the spacer of preceding dust-proof end plate and rear dust-proof end
The spacer of plate contacts with each other in straight slot, and the width of spacer is equal to the width of straight slot；The preceding insulating end plate and it is rear absolutely
The position that acies plate corresponds to winding slot passes through protrusion installation equipped with several hollow protrusions, preceding insulating end plate and rear insulating end plate
At the both ends of stator core.
Preferably, the wind loop is connected on casing inner wall, and wind loop is located at the front of preceding dust-proof end plate, and casing is logical
Dust-proof end plate before wind loop presses is crossed, rear dust-proof end plate compresses O-shaped rubber ring.
Preferably, the fan blade is centrifugal fan, and fan blade center is equipped with the first shading ring, is set on the wind loop
There is the second shading ring corresponding with fan blade, the outer diameter of first shading ring is slightly less than the internal diameter of the second shading ring, and first
Shading ring and the second shading ring cooperate rotor forward end seal.
Preferably, the inner wall of the outer wall of the rotor core and stator core is equipped with certain gap, the annulus
The corresponding both ends mounted on gap of lid, the both ends of rotor space are sealed.
Using technical solution provided by the utility model, compared with prior art, there is such as advantageous effect：
1, the utility model uses the rotor tail portion of casing, rear insulating end plate, rear dust-proof end plate and O-shaped rubber ring composition
Confined space reaches dust-proof purpose, with the confined space for the rotor front that fan blade, wind loop are constituted, reaches dust-proof purpose, passes through
Dust-proof processing is carried out to rotor rear and front end, the effective dust in stator interior space and rotor core surface can be obtained.
2, the preceding dust-proof end plate of the utility model, preceding insulating end plate, rear insulating end plate and rear dust-proof end plate can be realized in stator
Winding slot on portion's rotor space and stator it is completely isolated, reach the dust-proof effect of stator interior rotor space.
3, it can make to enter the dust particles on electrical-coil by fan blade and motor is discharged through airspace, air-guiding hole.
Description of the drawings
Fig. 1 is the structural schematic diagram of the dustproof construction of the utility model brushless motor；
Fig. 2 is the assembling schematic diagram of front and back dust-proof end plate, front and back insulating end plate and stator in the utility model；
Fig. 3 is the combination diagram of stator core and rotor core in the utility model；
Fig. 4 is the combination diagram of the utility model coil and stator core；
Fig. 5 is the structural perspective of fan blade in the utility model；
Fig. 6 is the structural perspective of wind loop in the utility model；
Fig. 7 is the structural schematic diagram of rotor and fan blade combination in the utility model；
Mark explanation in schematic diagram：1- casings；2- rotors；3- stators；4- fan blades；5- wind loops；Dust-proof end plate before 6-；
Insulating end plate before 7-；Insulating end plate after 8-；Dust-proof end plate after 9-；10-O type rubber rings；；2-1 rotor cores；2-2 rotor mandrels；
3-1 stator cores；3-2 coils；3-3 winding slots；3-4 airspaces；3-5 rotor spaces；3-6 straight slots；The gaps 3-7；4-1 first
Shading ring；The second shading rings of 5-1；5-2 air-guiding holes；7-1 protrusions：9-1 inserted sheets：9-2 circular ring covers.
Specific implementation mode
Below by the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only a part of the embodiment of the utility model, instead of all the embodiments.Based on the implementation in the utility model
Example, all other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
According to Fig. 1 to Fig. 7, the present embodiment is related to a kind of dustproof construction of brushless motor, including casing 1,2 and of rotor
Around the stator 3 of the rotor 2, the rotor 2 includes rotor core 2-1 and rotor mandrel 2-2, and the stator 3 includes
Stator core 3-1 and several coil 3-2, the centers stator core 3-1 are the rotor space for installing rotor core 2-1
3-5, stator core 3-1 are equipped with several winding slots 3-3, and the coil 3-2 is embedded in winding slot 3-3, two neighboring
The spaces winding slot 3-3 between coil 3-2 form airspace 3-4；Straight slot is equipped between winding slot 3-3 and rotor space 3-5
3-6, the brushless motor are equipped with the isolating device for sealing rotor space 3-5.
The isolating device include fan blade 4, wind loop 5, preceding dust-proof end plate 6, preceding insulating end plate 7, rear insulating end plate 8,
Dust-proof end plate 9 and O-shaped rubber ring 10 afterwards, the preceding insulating end plate 7 and rear insulating end plate 8 are separately mounted to stator core 3-1
Rear and front end, the preceding dust-proof end plate 6 be mounted on preceding insulating end plate 7 outside, after the rear dust-proof end plate 9 is mounted on
The outside of insulating end plate 8；The fan blade 4 is set in the front ends rotor mandrel 2-2, and wind loop 5 is located at 3 front end of stator, wind loop 5
Between fan blade 4 and stator 3, circumferentially arranged with several and the one-to-one wind-guidings of airspace 3-4 on the wind loop 5
Hole 5-2, O-shaped rubber ring 10 are located at 2 rear end of rotor, preceding dust-proof end plate 6 and the cooperation of rear dust-proof end plate 9 by winding slot 3-3 and rotor
Space 3-5 is isolated, and fan blade 4 and the cooperation of wind loop 5 coordinate 2 forward end seal of rotor, casing 1 and O-shaped rubber ring 10 by rotor 2
Back-end sealing.
The dust-proof end plate includes circular ring cover 9-2 and several spacer 9-1；The spacer 9-1 is uniformly set to circle
On ring cowling 9-2, spacer 9-1, which is inserted into straight slot 3-6, makes winding slot 3-3 and rotor space 3-5 be isolated, preceding dust-proof end plate 6
Spacer 9-1 and the spacer 9-1 of rear dust-proof end plate 9 contact with each other in straight slot 3-6, the width of spacer 9-1 is equal to logical
The width of slot 3-6；The position that the preceding insulating end plate 7 and rear insulating end plate 8 correspond to winding slot 3-3 is hollow equipped with several
Raised 7-1, preceding insulating end plate 7 and rear insulating end plate 8 are mounted on the both ends of stator core 3-1 by raised 7-1；The rotor
The outer wall of iron core 2-1 and the inner wall of stator core 3-1 are equipped with certain gap 3-7, between the circular ring cover 9-2 correspondences are mounted on
The both ends of gap 3-7 seal the both ends of rotor space 3-5.
The wind loop 5 is connected on 1 inner wall of casing, and wind loop 5 is located at the front of preceding dust-proof end plate 6, and casing 1 passes through
Wind loop 5 presses preceding dust-proof end plate 6, and rear dust-proof end plate 9 compresses O-shaped rubber ring 10.
The fan blade 4 is centrifugal fan, and 4 center of fan blade is equipped with the first shading ring 4-1, is set on the wind loop 5
There are second shading ring 5-1 corresponding with fan blade 4, the outer diameter of the first shading ring 4-1 to be slightly less than the second shading ring 5-1's
Internal diameter, the first shading ring 4-1 and the second shading ring 5-1 cooperate 2 forward end seal of rotor.
The dust-proof principle of the utility model：
When motor works, rotor mandrel 2-2 drives the rotation of fan blade 4 to radiate, and dust particles are with air-flow from motor rear end
Casing 1 enter, since 2 rear end of rotor has O-shaped rubber ring 10 and casing 1 to cooperate sealing, dust particles, which cannot be introduced into, to be turned
Sub 2 rear ends, raised 7-1 that can only be hollow from 3 rear end of stator enters the winding slot 3-3 of stator 3, empty in winding slot 3-3 and rotor
Between spacer 9-1 is equipped between 3-5, winding slot 3-3 and rotor space 3-5 are isolated spacer 9-1, before and after stator core 3-1
The circular ring cover 9-2 at both ends is by the sealing of the gap 3-7 between rotor core 2-1 outer walls and stator core inner wall 3-1, dust
Grain cannot be introduced into rotor space 3-5；Dust particles pass through the air-guiding hole 5-2 of wind loop 5, the first shading ring on fan blade 4 later
For the second shading ring 5-1 on 4-1 and wind loop 5 by 2 forward end seal of rotor, dust particles cannot be introduced into 2 front end of rotor, finally by
Centrifugal fan throws away casing.
The above description is only the embodiments of the present invention, and it does not limit the scope of the patent of the present invention, every
Using equivalent structure or equivalent flow shift made by the utility model description, it is applied directly or indirectly in other phases
The technical field of pass, is equally included in the patent within the scope of the utility model.
Claims (6)
1. a kind of dustproof construction of brushless motor, the brushless motor includes the stator of casing, rotor and the circular rotor,
The rotor includes rotor mandrel and rotor core, and the stator includes stator core and several coils, the stator
Iron core center is the rotor space for installing rotor core, and stator core is equipped with several winding slots, and the coil is embedding
It is located in winding slot, the coiling slot space between two neighboring coil forms airspace；It is set between winding slot and rotor space
There is straight slot, which is characterized in that the brushless motor is equipped with the isolating device for sealing rotor space.
2. the dustproof construction of brushless motor according to claim 1, which is characterized in that the isolating device includes wind
Leaf, wind loop, preceding dust-proof end plate, preceding insulating end plate, rear insulating end plate, rear dust-proof end plate and O-shaped rubber ring, the preceding insulation
End plate and rear insulating end plate are separately mounted to the rear and front end of stator core, and the preceding dust-proof end plate is mounted on preceding insulating end plate
Outside, the rear dust-proof end plate be mounted on rear insulating end plate outside；The fan blade is set in rotor mandrel front end, gear
Solar or lunar halo is located at stator front end, and wind loop is between fan blade and stator, circumferentially arranged with several and ventilation on the wind loop
The one-to-one air-guiding hole in space, O-shaped rubber ring are located at rotor rear end, preceding dust-proof end plate and rear dust-proof end plate cooperation by winding slot
It is isolated with rotor space, fan blade and wind loop cooperation coordinate rotor forward end seal, casing and O-shaped rubber ring by rotor rear end
Sealing.
3. the dustproof construction of brushless motor according to claim 2, which is characterized in that the dust-proof end plate includes annulus
Lid and several spacers；The spacer is uniformly set on circular ring cover, and spacer is inserted into straight slot so that winding slot and rotor
Space is isolated, and the spacer of the spacer of preceding dust-proof end plate and rear dust-proof end plate contacts with each other in straight slot, the width of spacer
Width of the degree equal to straight slot；The position that the preceding insulating end plate and rear insulating end plate correspond to winding slot is hollow equipped with several
Protrusion, preceding insulating end plate and rear insulating end plate are mounted on the both ends of stator core by protrusion.
4. the dustproof construction of brushless motor according to claim 2, which is characterized in that the wind loop is connected to casing
On inner wall, wind loop is located at the front of preceding dust-proof end plate, dust-proof end plate before casing is pressed by wind loop, and rear dust-proof end plate compresses
O-shaped rubber ring.
5. the dustproof construction of brushless motor according to claim 2, which is characterized in that the fan blade is centrifugal wind
Leaf, fan blade center are equipped with the first shading ring, and the wind loop is equipped with the second shading ring corresponding with fan blade, and described the
The outer diameter of one shading ring is slightly less than the internal diameter of the second shading ring, and the first shading ring and the second shading ring cooperate rotor front end
Sealing.
6. the dustproof construction of brushless motor according to claim 3, which is characterized in that the outer wall of the rotor core and
The inner wall of stator core is equipped with certain gap, and the circular ring cover is corresponded to mounted on the both ends in gap, by the two of rotor space
End sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820462735.XU CN208062951U (en) | 2018-04-03 | 2018-04-03 | A kind of dustproof construction of brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820462735.XU CN208062951U (en) | 2018-04-03 | 2018-04-03 | A kind of dustproof construction of brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208062951U true CN208062951U (en) | 2018-11-06 |
Family
ID=63988109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820462735.XU Active CN208062951U (en) | 2018-04-03 | 2018-04-03 | A kind of dustproof construction of brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208062951U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306437A (en) * | 2018-04-03 | 2018-07-20 | 浙江金美电动工具有限公司 | The dustproof construction of brushless motor |
| CN112610512A (en) * | 2020-11-27 | 2021-04-06 | 广东威灵电机制造有限公司 | Fan housing of fan, fan and electrical apparatus |
-
2018
- 2018-04-03 CN CN201820462735.XU patent/CN208062951U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306437A (en) * | 2018-04-03 | 2018-07-20 | 浙江金美电动工具有限公司 | The dustproof construction of brushless motor |
| CN108306437B (en) * | 2018-04-03 | 2023-12-05 | 浙江金美电动工具有限公司 | Dustproof structure of brushless motor |
| CN112610512A (en) * | 2020-11-27 | 2021-04-06 | 广东威灵电机制造有限公司 | Fan housing of fan, fan and electrical apparatus |
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