CN208539694U - A kind of brushless motor - Google Patents
A kind of brushless motor Download PDFInfo
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- CN208539694U CN208539694U CN201821293150.6U CN201821293150U CN208539694U CN 208539694 U CN208539694 U CN 208539694U CN 201821293150 U CN201821293150 U CN 201821293150U CN 208539694 U CN208539694 U CN 208539694U
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- magnet steel
- rotor core
- brushless motor
- rotor
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Abstract
The utility model discloses a kind of brushless motor, solve the problems, such as that the binding force of brushless electric motor rotor iron core and magnet steel is to be improved at this stage.Its key points of the technical solution are that a kind of brushless motor, including motor housing, the rotor assembly and stator module being installed in motor housing, the rotor assembly includes shaft, the rotor core being installed on the outside of shaft, multiple magnet steel for being fixed on the outside of rotor core and rotor assembly both ends are installed on to limit two magnet steel sheaths of magnet steel sliding, the external circumferential of the rotor core is uniformly provided with through its both ends and for multiple mounting grooves of magnet steel installation, the magnet steel sheath has for all magnet steel while the inserting groove being inserted into and the flange being bonded with the lateral wall in all magnet steel far from rotor core side, the magnet steel of the brushless motor and the binding force of rotor core are larger, so that the magnet steel is not easy to be detached from from rotor core.
Description
Technical field
The utility model relates to a kind of motors, more particularly to a kind of brushless motor.
Background technique
Magnet steel is usually circumferentially fitted in the outside of rotor core by brushless motor at this stage, but above-mentioned directly by magnet steel
The mode being fitted on the outside of rotor core, after the revolving speed of rotor is promoted, so that the magnet steel in entire brushless motor exists from turning
The risk being detached from sub- iron core, therefore need to develop a kind of magnet steel and the biggish brushless electricity of rotor core binding force at this stage
Machine.
Utility model content
The purpose of the utility model is to provide a kind of brushless motor, the combination of the magnet steel and rotor core of the brushless motor
Power is larger, so that the magnet steel is not easy to be detached from from rotor core.
The above-mentioned technical purpose of the utility model has the technical scheme that
A kind of brushless motor, including motor housing, the rotor assembly and stator module that are installed in motor housing, described turn
Sub-component includes shaft, the rotor core being installed on the outside of shaft, multiple magnet steel and the installation being fixed on the outside of rotor core
Two magnet steel sheaths of magnet steel sliding are limited in rotor assembly both ends, the external circumferential of the rotor core, which is uniformly provided with, passes through
Wear its both ends and for magnet steel installation multiple mounting grooves, the magnet steel sheath have for all magnet steel simultaneously be inserted into inserting groove with
And the flange being bonded with the lateral wall in all magnet steel far from rotor core side.
By using above-mentioned technical proposal, magnet steel is mounted in the mounting groove of rotor core, and is adhesively fixed by glue,
And by setting magnet steel sheath, so that magnet steel is pressed in mounting groove by the flange of magnet steel sheath, turn when rotor starts hypervelocity
When dynamic, magnet steel is not easy to split away off from rotor core under the limitation of mounting groove and magnet steel sheath, to improve entire magnetic
The binding force of steel and rotor core.
The lateral wall in the magnet steel far from rotor core side is towards separate as a further improvement of the utility model,
The cambered surface of rotor core direction protrusion.
By using above-mentioned technical proposal, so that the flange contact surface of the lateral surface of magnet steel and magnet steel sheath is cambered surface, phase
For flat interface construction, the maximum support power that this structure makes flange be supplied to magnet steel gets a promotion, i.e., magnet steel protects
The flange of set is not susceptible to rupture during supporting magnet steel.When rotor overspeed rotation, magnet steel is tightly compressed by flange
In the mounting groove of rotor core, the probability that magnet steel is detached from from rotor core further reduced.
The lateral wall of the rotor core is also set up together between adjacent magnet steel as a further improvement of the utility model,
The structure fin that the two sides Shi Yuqi magnet steel abuts, two magnet steel positioned at structure fin two sides are symmetrical about structure fin.
By using above-mentioned technical proposal, the setting of structure fin can reinforce knot of the rotor core between adjacent magnet steel
Structure intensity, since magnet steel is installed in the mounting groove of rotor core, when the rotor is turning, magnet steel can give installation groove sidewall one
A extruding force, the setting of structure fin are able to ascend the structural strength of entire rotor core, so that installation groove sidewall is capable of providing
To the biggish support force of magnet steel, breakage will not occurs in itself.
The cross section of the structure fin is in isosceles trapezoid shape, the structure as a further improvement of the utility model,
The short side side wall of fin is connected with rotor core.
By using above-mentioned technical proposal, cross section is higher in the structural strength of the structure fin of isosceles trapezoid shape, can
It is supplied to the bigger support force of magnet steel, to enhance the structural strength of entire rotor core, extends the use of entire brushless motor
Service life.
The magnet steel sheath is equipped with plastic-bonded magneto and inserting groove in inserting groove as a further improvement of the utility model,
The balance clay of bottom.
By using above-mentioned technical proposal, the setting for balancing clay further improves company between magnet steel and magnet steel sheath
Intensity is connect, the probability that the two shifts is reduced.
The length at the flange and the magnet steel place of being affixed is at least magnet steel length as a further improvement of the utility model,
1/7th.
By using above-mentioned technical proposal, guarantee that the length at flange and the magnet steel place of being affixed can guarantee magnet steel and magnet steel sheath
Between bonding strength, both reduce the probability that shifts.
The bottom of the mounting groove is the cambered surface towards magnet steel direction protrusion as a further improvement of the utility model,
The magnet steel has the installation cambered surface to fit with installation groove bottom.
By using above-mentioned technical proposal, the bottom surface compared to mounting groove is the bottom of mounting groove for the structure of plane
For cambered surface, the contact area of rotor core and magnet steel can be reinforced, promote the bonding strength of the two, reduce magnet steel from rotor core
Locate the probability being detached from.
In conclusion the utility model has the following beneficial effects:
1, a kind of brushless motor, by being opened up at rotor core for the mounting groove of magnet steel installation and in rotor assembly
The magnet steel sheath of limitation magnet steel axis sliding is set, to improve the binding force of magnet steel and rotor core, reduces magnet steel from rotor
The probability that iron core falls off；
2, the lateral wall in magnet steel far from rotor core side is to increase towards the cambered surface far from rotor core direction outwardly convex
The area for having added the flange of magnet steel and magnet steel sheath to contact, to promote the binding force of the two.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the brushless motor in embodiment 1；
Fig. 2 is the cooperation schematic diagram of the stator core and winding in embodiment 1；
Fig. 3 is the structural schematic diagram of the stator punching in embodiment 1；
Fig. 4 is the cooperation schematic diagram of the rotor assembly in embodiment 1；
Fig. 5 is the enlarged drawing in Fig. 4 at A；
Fig. 6 is the cooperation diagrammatic cross-section of rotor core, magnet steel and magnet steel sheath in embodiment 1；
Fig. 7 is the cooperation diagrammatic cross-section of rotor core, magnet steel and magnet steel sheath in embodiment 2.
In figure: 100, motor housing；110, metal cylinder；120, drive end bearing bracket；121, first through hole；122, first axle carrier ring
Slot；130, rear end cap；131, the second through-hole；132, second bearing annular groove；200, rotor assembly；210, shaft；220, rotor iron
Core；221, structure fin；222, mounting groove；230, magnet steel；231, cambered surface is installed；240, magnet steel sheath；241, inserting groove；242,
Flange；250, first bearing；260, second bearing；270, rotor punching；280, clay is balanced；300, stator module；310, fixed
Sub- iron core；311, winding pillar；320, winding；330, wiring board；340, stator punching；341, winding lug；342, limit convex
Piece；343, pedestal.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
Embodiment 1:
Refering to attached drawing 1, a kind of brushless motor, including motor housing 100, the rotor assembly being installed in motor housing 100
200 and stator module 300.
Motor housing 100 mainly includes columned metal cylinder 110,120 and of drive end bearing bracket for being installed on 110 front end of metal cylinder
It is installed on the rear end cap 130 of 110 rear end of metal cylinder.Wherein, there is first through hole 121, and drive end bearing bracket at the center of drive end bearing bracket 120
120 are provided with first bearing annular groove 122 at the edge of the lateral edge first through hole 121 towards metal cylinder 110；Rear end cap 130
There is the second through-hole 131, and rear end cap 130 is provided with towards second through-hole of lateral edge, 131 edge of metal cylinder 110 at center
Second bearing annular groove 132.
Refering to attached drawing 1 and attached drawing 2, stator module 300 includes stator core 310, the winding being wrapped on stator core 310
320 and the wiring board 330 that is fixed in metal cylinder 110.
Refering to attached drawing 2 and attached drawing 3, stator core 310 is welded by the stacking of multi-disc stator punching 340.Stator punching 340
It is whole annular in shape, and the inner ring of stator punching 340 is circumferentially uniformly arranged that there are six winding lug 341, the ends of winding lug 341
The limit lug 342 that restricted winding 320 falls off is arranged in portion.The outside of stator punching 340 be also circumferentially uniformly provided with welding groove and
Pedestal 343 in welding groove by the way that stator punching 340 to be laminated, and passes through pedestal 343 for multi-disc stator
Punching 340, which is welded into, rushes stator core 310, and 320 lug of winding being laminated on the stator punching 340 of stacking forms winding pillar
311.In the present embodiment, pedestal 343 there are three being uniformly arranged on the outside of stator punching 340.
Refering to attached drawing 4, rotor assembly 200 includes shaft 210, the rotor core 220 for being installed on 210 outside of shaft, fixes
In the outside of rotor core 220 multiple magnet steel 230 and be installed on 200 both ends of rotor assembly to limit the two of the sliding of magnet steel 230
A magnet steel sheath 240.
Refering to attached drawing 1 and attached drawing 4, the front end of shaft 210 passes through first through hole 121, and the front end of shaft 210 is equipped with outside
Enclose the first bearing 250 being fixed in first bearing annular groove 122；The rear end of shaft 210 is located in the second through-hole 131, and shaft
210 rear end is equipped with the second bearing 260 being fixed in second bearing annular groove 132 outer ring.
Refering to attached drawing 4 and attached drawing 6, rotor core 220 is welded by the stacking of multi-disc rotor punching 270.Wherein, rotor rushes
The whole square sheet metal of piece 270, and structure lug is respectively provided at four angles of rotor punching 270, structure lug is integrally in
The short side of isosceles trapezoid shape, structure lug is connected with rotor punching 270, and the bevel edge of structure lug is perpendicular to rotor punching 270
Four sides, and a card slot is respectively formed on four sides of rotor punching 270.
The structure lug of multiple rotor punchings 270 overlaps to form structure fin 221, and the cross section of structure fin 221 is in
Isosceles trapezoid shape, and the short side side wall of structure fin 221 is connected with rotor core 220.The card slot of multiple rotor punchings 270 is overlapped
It is formed through 220 both ends of rotor core and for four mounting grooves 222 of the installation of magnet steel 230.In the present embodiment, mounting groove 222
Bottom surface be square planar.
Magnet steel 230 is whole in long strip and bilateral symmetry.The lateral wall of separate 220 side of rotor core is in magnet steel 230
Towards the cambered surface far from 220 direction of rotor core protrusion.Wherein, the length of magnet steel 230 is greater than the length of rotor core 220, and
The length that 220 outside of rotor core is stretched out at the both ends of magnet steel 230 is identical.In the present embodiment, magnet steel 230 and rotor core 220
It is adhesively fixed by anaerobic adhesive.
Refering to attached drawing 4 and attached drawing 5, magnet steel sheath 240 have for all magnet steel 230 simultaneously the inserting groove 241 of insertion and
The flange 242 being bonded with the lateral wall in all magnet steel 230 far from 220 side of rotor core.230 outside of flange 242 and magnet steel
Cambered surface be affixed place length be 230 length of magnet steel 3/20ths.
Magnet steel sheath 240 is equipped with the balance clay 280 of 241 bottom of plastic-bonded magneto 230 and inserting groove in inserting groove 241.
By balancing the setting of clay 280, the bonding strength of magnet steel sheath 240 and magnet steel 230 is not only improved, but also can pass through
Amount of the balance clay 280 at each magnet steel 230 is set, to adjust the balance of entire rotor.
Embodiment 2:
Brushless motor in the present embodiment is compared with the brushless motor in embodiment 1, in addition to the mounting groove 222 of rotor core 220
Structure and the structure of magnet steel 230 are Bu Tong outer, remaining structure is communicated with the structure in embodiment 1.
Refering to attached drawing 7, the bottom of the mounting groove 222 in rotor core 220 in the present embodiment is towards 230 direction of magnet steel
The cambered surface of protrusion, and about 222 bilateral symmetry of mounting groove.And the tiles magnet steel of the generally consistency of thickness of magnet steel 230, and have with
The installation cambered surface 231 that 222 bottom surface of mounting groove fits.By the setting of this structure, the weight of magnet steel 230 can be reduced, and
By increasing the contact area of magnet steel 230 and 222 bottom surface of mounting groove, thus the adhesion strength both increased, reduce magnet steel 230 from
The probability being detached from rotor core 220.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (8)
1. a kind of brushless motor including motor housing (100), the rotor assembly (200) being installed in motor housing (100) and is determined
Sub-component (300), which is characterized in that the rotor assembly (200) include shaft (210), be installed on the outside of shaft (210) turn
Sub- iron core (220), the multiple magnet steel (230) being fixed on the outside of rotor core (220) and it is installed on rotor assembly (200) both ends
To limit two magnet steel sheaths (240) of magnet steel (230) sliding, the external circumferential of the rotor core (220) is uniformly provided with
Through its both ends and for multiple mounting grooves (222) of magnet steel (230) installation, the magnet steel sheath (240), which has, supplies all magnet steel
(230) inserting groove (241) being inserted into simultaneously and the lateral wall with rotor core (220) side separate in all magnet steel (230)
The flange (242) of fitting.
2. a kind of brushless motor according to claim 1, which is characterized in that far from rotor core in the magnet steel (230)
(220) lateral wall of side is towards the cambered surface far from rotor core (220) direction protrusion.
3. a kind of brushless motor according to claim 1, which is characterized in that the lateral wall of the rotor core (220) exists
The structure fin (221) for also setting up between adjacent magnet steel (230) while abutting with its two sides magnet steel (230) is located at structure fin
(221) two of the two sides magnet steel (230) are symmetrical about structure fin (221).
4. a kind of brushless motor according to claim 3, which is characterized in that the cross section of the structure fin (221) is in
The short side side wall of isosceles trapezoid shape, the structure fin (221) is connected with rotor core (220).
5. a kind of brushless motor according to claim 1, which is characterized in that the magnet steel sheath (240) is in inserting groove
(241) the balance clay (280) of plastic-bonded magneto (230) and inserting groove (241) bottom is equipped in.
6. a kind of brushless motor according to claim 1, which is characterized in that the flange (242) is affixed with magnet steel (230)
The length at place is at least 1/7th of magnet steel (230) length.
7. a kind of brushless motor according to claim 2, which is characterized in that the bottom of the mounting groove (222) is direction
The cambered surface of magnet steel (230) direction protrusion, the magnet steel (230) have the installation cambered surface to fit with mounting groove (222) bottom surface
(231)。
8. a kind of brushless motor according to claim 7, which is characterized in that the magnet steel (230) is constant watt of thickness
Shape magnet steel (230).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821293150.6U CN208539694U (en) | 2018-08-11 | 2018-08-11 | A kind of brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821293150.6U CN208539694U (en) | 2018-08-11 | 2018-08-11 | A kind of brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208539694U true CN208539694U (en) | 2019-02-22 |
Family
ID=65378087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821293150.6U Active CN208539694U (en) | 2018-08-11 | 2018-08-11 | A kind of brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208539694U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110011447A (en) * | 2019-05-09 | 2019-07-12 | 浙江万冠电机有限公司 | A kind of motor of dust collector |
| CN110460184A (en) * | 2019-08-20 | 2019-11-15 | 瑞昌市森奥达科技有限公司 | Improve the brushless permanent magnet electromotor of low performance magnet |
-
2018
- 2018-08-11 CN CN201821293150.6U patent/CN208539694U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110011447A (en) * | 2019-05-09 | 2019-07-12 | 浙江万冠电机有限公司 | A kind of motor of dust collector |
| CN110460184A (en) * | 2019-08-20 | 2019-11-15 | 瑞昌市森奥达科技有限公司 | Improve the brushless permanent magnet electromotor of low performance magnet |
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