CN205657571U - Outer rotor brushless DC motor - Google Patents
Outer rotor brushless DC motor Download PDFInfo
- Publication number
- CN205657571U CN205657571U CN201620520418.XU CN201620520418U CN205657571U CN 205657571 U CN205657571 U CN 205657571U CN 201620520418 U CN201620520418 U CN 201620520418U CN 205657571 U CN205657571 U CN 205657571U
- Authority
- CN
- China
- Prior art keywords
- bearing
- motor
- quill shaft
- outer rotor
- rotor brushless
- 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
Links
Landscapes
- Motor Or Generator Frames (AREA)
Abstract
The utility model provides an outer rotor brushless DC motor, include motor housing and set up in the front end housing and the rear end cap at its both ends, constitute one jointly and hold the chamber. The motor still includes magnet steel, stator module and quill shaft, and the magnet steel sets up on motor housing's inner wall, and stator module sets up in holding intracavity and suit in the quill shaft outside. Still include rear bearing, fore bearing and flange bearing, the first end at the quill shaft is installed to the rear bearing, and rear bearing and rear end cap are adjacent, and the fore bearing is installed between front end housing and quill shaft, and bearing Kit is on the quill shaft and be close to the second end of quill shaft before simultaneously, and the flange bearing sets up the second end at the quill shaft, and flange bearing position in the outside of fore bearing. The center pin passes rear end cap, rear bearing, quill shaft and flange bearing in proper order. Rear bearing, fore bearing and the three bearings with shaft of flange bearing set up, can effectively reduce the motor and in the vibration of in -process of operateing, reduce the operating noise of motor, have improved the motor traveling comfort.
Description
Technical field
This utility model relates to technical field of motors, especially relates to a kind of outer rotor brushless DC motor.
Background technology
Motor is one of various electronic product essential element, and the advantage that wherein outer rotor induction machine has compact conformation, stock utilization is high is widely used in the fields such as exhaust equipment, air conditioning unit, air cleaning system and cooling device.
Existing outer rotor brushless DC motor typically has two bearings, the axiality of the two bearing will affect the air gap of rotor and stator, if there is Form and position error and rigging error during processing and assembling in the motor of two bearings, when making processing and assemble not in place, the air gap easily causing motor is uneven, and make motor produce electromagnetic noise and vibration, the axiality after two bearing assemblings the most also can be caused poor, affect motor and the stationarity of rear center's shaft torque output is installed, make to produce bigger vibration and noise during motor rotation, thus reduce the performance of motor.
Summary of the invention
It is high that main purpose of the present utility model is to provide a kind of axiality, operates steadily, the outer rotor brushless DC motor that noise is low.
For achieving the above object, this utility model provides a kind of outer rotor brushless DC motor, the drive end bearing bracket including motor housing and being arranged at motor housing two ends and rear end cap, and motor housing and drive end bearing bracket, rear end cap form a receiving chamber.Outer rotor brushless DC motor also includes magnet steel, stator module and quill shaft, and magnet steel is arranged on the inwall of motor housing, and stator module is arranged at and accommodates intracavity and be sleeved on the outside of quill shaft.Outer rotor brushless DC motor also includes rear bearing, fore bearing and flange bearing, rear bearing is arranged on the first end of quill shaft, and rear bearing is adjacent with rear end cap, fore bearing is arranged between drive end bearing bracket and quill shaft, fore bearing is sleeved on quill shaft and the second end of close quill shaft simultaneously, flange bearing is arranged on the second end of quill shaft, and flange bearing is positioned at the outside of fore bearing.It addition, outer rotor brushless DC motor also includes central shaft, central shaft is fixing with rear end cap to be connected, and central shaft sequentially passes through rear end cap, rear bearing, quill shaft and flange bearing.
From such scheme, rear bearing, fore bearing and three coaxial bearing of flange bearing are arranged, and can effectively reduce motor vibration in operation process, reduce the operating noise of motor, improve motor traveling comfort.
One preferred scheme is that outer rotor brushless DC motor also includes flanged plate, and flanged plate offers mounting groove, and the second end of quill shaft inserts in mounting groove, and is fixedly mounted on quill shaft by flanged plate by least one first fixture.
As can be seen here, flanged plate is arranged with quill shaft split, it is simple to the installation of fore bearing, it addition, offer mounting groove on flanged plate, can realize flanged plate being accurately positioned relative to quill shaft, the axiality of flange bearing and rear bearing is effectively ensured.
Further preferred scheme is, the first fixture is screw.
Further preferred scheme is, flanged plate offers clutch shaft bearing room, and it is indoor that flange bearing is arranged on clutch shaft bearing.
As can be seen here, the installation site of rear bearing sum corresponds respectively to the both sides of stator module, keeps a determining deviation that the position degree of central shaft has been effectively ensured between rear bearing and flange bearing.
One preferred scheme is that outer rotor brushless DC motor also includes circuit board, and the second end of quill shaft is provided with boss portion, and circuit board is fixedly mounted in boss portion.
As can be seen here, circuit board being disposed with circuit, and is integrated with electronic device, circuit and electronic device constitute feedback circuit, including controlling to flow through the power driving circuit of coil current size on stator module, the rotor speed testing circuit etc. of detection rotor speed.
One preferred scheme is, the first end of quill shaft offers the second bearing chamber, and rear bearing is installed in the second bearing chamber；Drive end bearing bracket forms the 3rd bearing chamber with quill shaft, and fore bearing is installed in the 3rd bearing chamber.
As can be seen here, one end of motor housing and the drive end bearing bracket being fixed on this end can be supported on quill shaft by fore bearing, additionally, fore bearing and rear bearing are all arranged on quill shaft, two bearing chambers can be avoided to be opened on two parts the problem of the axiality difference caused respectively, the axiality of motor fore bearing and rear bearing is effectively ensured.
One preferred scheme is, the quantity of rear bearing is two, and two rear bearings coaxially and are disposed adjacent.
As can be seen here, two rear bearings are arranged side by side, impulsive force when can be operated by the two loading ability of bearing and absorbent core axle, reduce the vibration produced in motor operation course and noise further, make motor operate steadily, improve the serviceability of motor.
One preferred scheme is, have along the axially arranged extension of outer rotor brushless DC motor on the inwall of rear end cap, multiple first through hole is offered on extension, motor housing has the second through hole being oppositely arranged with the first through hole, and the second fixture is connected fixing to rear end cap and motor housing through the first through hole and the second through hole.
As can be seen here, it is connected fixing to rear end cap and motor housing, to realize the transmission of torque by the second fixture.
Further preferred scheme is, the end of rear end cap extension is provided with at least one keeper, and keeper is that the end of magnet steel offers the groove coordinated with keeper from the end of extension to accommodating the projection extended in the middle part of chamber.
As can be seen here, on rear end cap, the protruding groove fit with magnet steel, can realize the location to magnet steel, and when preventing from running up, magnet steel comes off from motor housing.
Accompanying drawing explanation
Fig. 1 is the sectional view after this utility model outer rotor brushless DC motor embodiment hides fore bearing, rear bearing and magnet steel；
Fig. 2 is the sectional view of this utility model outer rotor brushless DC motor embodiment；
Fig. 3 is the exploded view of this utility model outer rotor brushless DC motor embodiment；
Fig. 4 is quill shaft and the view of one angle of flanged plate in this utility model outer rotor brushless DC motor embodiment；
Fig. 5 is quill shaft and the view of another angle of flanged plate in this utility model outer rotor brushless DC motor embodiment.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Detailed description of the invention
See Fig. 1 and Fig. 2, the outer rotor brushless DC motor of the present embodiment be model be the motor of BL7080A40-3, it includes that motor housing 1 and the drive end bearing bracket 2 being arranged at motor housing 1 two ends and rear end cap 3, motor housing 1 and drive end bearing bracket 2, rear end cap 3 form one and accommodate chamber.Outer rotor brushless DC motor also includes magnet steel 4, stator module 5 and quill shaft 6, and magnet steel 4 is arranged on the inwall of motor housing 1, and stator module 5 is arranged at and accommodates intracavity and be sleeved on the outside of quill shaft 6.Outer rotor brushless DC motor also includes rear bearing 71,73, fore bearing 72 and flange bearing 81, rear bearing 71,73 is arranged on the first end of quill shaft 6, and rear bearing 71,73 is adjacent with rear end cap 3, fore bearing 72 is arranged between drive end bearing bracket 2 and quill shaft 6, fore bearing 72 is sleeved on quill shaft 6 and the second end of close quill shaft 6 simultaneously, flange bearing 81 is arranged on the second end of quill shaft 6, and flange bearing 81 is positioned at the outside of fore bearing 72.It addition, outer rotor brushless DC motor also includes central shaft 9, central shaft 9 is fixing with rear end cap 3 to be connected, and central shaft 9 sequentially passes through rear end cap 3, rear bearing 71,73, quill shaft 6 and flange bearing 81.
Seeing Fig. 1 and Fig. 2, the quantity of rear bearing 71,73 is two, and two rear bearings 71,73 coaxially and are disposed adjacent.First end of quill shaft 6 offers bearing chamber 61, and two rear bearings 71,73 are mounted side by side in bearing chamber 61, and drive end bearing bracket 2 and quill shaft 6 form bearing chamber 62, and fore bearing 72 is installed in bearing chamber 62.The second end at quill shaft 6 is provided with boss portion 65, in boss portion 65, the side near stator module 5 has from boss portion 65 circumference towards the projection 63 radially extended, drive end bearing bracket 2 is provided with at motor radially to accommodating the projection 22 that intracavity portion extends, and protruding 63 and protruding 22 limit fore bearing 72 moves upward at motor shaft.One end of motor housing 1 and the drive end bearing bracket being fixed on this end 2 can be supported on quill shaft 6 by fore bearing 72, additionally, fore bearing 72 and rear bearing 71,73 being all arranged on quill shaft 6, such structure can effectively ensure that motor fore bearing 72 and the axiality of rear bearing 71,73.
See Fig. 1 to Fig. 3, have along the axially arranged extension 31 of outer rotor brushless DC motor on the inwall of rear end cap 3, multiple through hole 311 is offered on extension 31, multiple through holes 311 are uniformly distributed in the circumference of motor housing 1, motor housing 1 has the through hole 12 being oppositely arranged with through hole 311, and the second fixture is connected fixing with motor housing 1 for rear end cap 3 through through hole 311 and through hole 12.Second fixture is optionally with screw.The end of rear end cap 3 extension 31 is provided with at least one keeper 32, multiple keepers 32 are evenly arranged in the circumference of rear end cap 3 inwall, keeper 32 is that the end of magnet steel 4 offers the groove coordinated with keeper 32 from the end of extension 31 to accommodating the projection extended in the middle part of chamber.On rear end cap 3, the protruding groove fit with magnet steel 4, can realize the location to magnet steel 4, and when preventing from running up, magnet steel 4 comes off from motor housing 1.
Have along the axially arranged extension 21 of outer rotor brushless DC motor on the inwall of drive end bearing bracket 2, multiple through hole 211 is offered on extension 21, multiple through holes 211 are uniformly distributed in the circumference of motor housing 1, the fixtures such as motor housing 1 has the through hole 13 being oppositely arranged with through hole 211, screw are connected fixing with motor housing 1 for drive end bearing bracket 2 through through hole 211 and through hole 13.
See Fig. 2, it is installed with circuit board 11 in the side of the boss portion 65 of quill shaft 6, it is disposed with circuit on circuit board 11, and it is integrated with the electronic devices such as Hall element, circuit and electronic device constitute feedback circuit, including controlling the power driving circuit of flowing through coil size of current, the rotor speed testing circuit etc. of detection rotor speed, wherein Rotating speed measring circuit includes Hall element, and therefore Hall element is integrated on circuit boards.
See Fig. 4 and Fig. 5, outer rotor brushless DC motor also includes flanged plate 8, mounting groove 82 is offered on flanged plate 8, second end of quill shaft 6 inserts in mounting groove 82, first fixture, optionally with screw, uses multiple screw to be fixedly mounted on quill shaft 6 by flanged plate through corresponding through hole 64 on the multiple through holes 84 on flanged plate and quill shaft.Flanged plate 8 is arranged with quill shaft 6 split, it is simple to the installation of fore bearing 72, offers mounting groove 82, can realize flanged plate 8 being accurately positioned relative to quill shaft 6 on flanged plate 8, and the axiality of flange bearing 81 and rear bearing 71,73 is effectively ensured.It addition, offer bearing chamber 83 on flanged plate 8, flange bearing 81 is arranged in bearing chamber 83.The installation site of rear bearing 71,73 and flange bearing 81 corresponds respectively to the both sides of stator module 5, keep a determining deviation that the position degree of central shaft 9 has been effectively ensured between rear bearing 71,73 and flange bearing 81.
Therefore, rear bearing 71,73, fore bearing 72 and flange bearing 81 are coaxially disposed, and can effectively reduce motor vibration in operation process, reduce the operating noise of motor, improve motor traveling comfort.Two rear bearings 71,73 are arranged side by side, impulsive force when can be operated by the two bearing 71,73 carrying and absorbent core axle 9, reduce the vibration produced in motor operation course and noise further, make motor operate steadily, improve the serviceability of motor.
Claims (9)
1. outer rotor brushless DC motor, the drive end bearing bracket including motor housing and being arranged at described motor housing two ends and rear end cap, described motor housing is formed with described drive end bearing bracket, described rear end cap and accommodates chamber；
It is characterized in that:
Described outer rotor brushless DC motor also includes
Magnet steel, described magnet steel is arranged on the inwall of described motor housing；
Stator module, described stator module is arranged at described receiving intracavity；
Quill shaft, described stator module is sleeved on the outside of described quill shaft；
Rear bearing, described rear bearing is arranged on the first end of described quill shaft, and described rear bearing is adjacent with described rear end cap；
Fore bearing, described fore bearing is arranged between described drive end bearing bracket and described quill shaft, and described fore bearing is sleeved on described quill shaft and the second end of close described quill shaft；
Flange bearing, described flange bearing is arranged on the second end of described quill shaft, and described flange bearing is positioned at the outside of described fore bearing；
Central shaft, described central shaft is fixing with described rear end cap to be connected, and described central shaft sequentially passes through described rear end cap, described rear bearing, described quill shaft and described flange bearing.
Outer rotor brushless DC motor the most according to claim 1, it is characterised in that:
Described outer rotor brushless DC motor also includes flanged plate, and described flanged plate offers mounting groove, and the second end of described quill shaft inserts in described mounting groove, and is fixedly mounted on described quill shaft by described flanged plate by least one first fixture.
Outer rotor brushless DC motor the most according to claim 2, it is characterised in that:
Described first fixture is screw.
Outer rotor brushless DC motor the most according to claim 2, it is characterised in that:
Offering clutch shaft bearing room on described flanged plate, it is indoor that described flange bearing is arranged on described clutch shaft bearing.
Outer rotor brushless DC motor the most according to claim 1, it is characterised in that:
Described outer rotor brushless DC motor also includes circuit board, and the second end of described quill shaft is provided with boss portion, and described circuit board is fixedly mounted in described boss portion.
6. according to the outer rotor brushless DC motor described in any one of claim 1 to 5, it is characterised in that:
First end of described quill shaft offers the second bearing chamber, and described rear bearing is installed in described second bearing chamber；
Described drive end bearing bracket forms the 3rd bearing chamber with described quill shaft, and described fore bearing is installed in described 3rd bearing chamber.
7. according to the outer rotor brushless DC motor described in any one of claim 1 to 5, it is characterised in that:
The quantity of described rear bearing is two, and two described rear bearings coaxially and are disposed adjacent.
8. according to the outer rotor brushless DC motor described in any one of claim 1 to 5, it is characterised in that:
Have along the axially arranged extension of described outer rotor brushless DC motor on the inwall of described rear end cap, multiple first through hole is offered on described extension, described motor housing has the second through hole being oppositely arranged with described first through hole, and the second fixture is connected fixing to described rear end cap and described motor housing through described first through hole and described second through hole.
Outer rotor brushless DC motor the most according to claim 8, it is characterised in that:
The end of described rear end cap extension is provided with at least one keeper, and described keeper is the projection extended in the middle part of described receiving chamber from the end of described extension, and the end of described magnet steel offers the groove coordinated with described keeper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620520418.XU CN205657571U (en) | 2016-05-31 | 2016-05-31 | Outer rotor brushless DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620520418.XU CN205657571U (en) | 2016-05-31 | 2016-05-31 | Outer rotor brushless DC motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205657571U true CN205657571U (en) | 2016-10-19 |
Family
ID=57404953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620520418.XU Expired - Fee Related CN205657571U (en) | 2016-05-31 | 2016-05-31 | Outer rotor brushless DC motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205657571U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113541432A (en) * | 2020-04-22 | 2021-10-22 | 磁化电子株式会社 | Actuator for generating vibrations |
-
2016
- 2016-05-31 CN CN201620520418.XU patent/CN205657571U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113541432A (en) * | 2020-04-22 | 2021-10-22 | 磁化电子株式会社 | Actuator for generating vibrations |
| CN113541432B (en) * | 2020-04-22 | 2022-05-03 | 磁化电子株式会社 | Actuator for generating vibrations |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6431774B2 (en) | Drive device | |
| US9698647B2 (en) | Electric machine with magnetic sensor | |
| CN108138649B (en) | Electric supercharger | |
| JP6012022B2 (en) | Brushless motor | |
| CN205657571U (en) | Outer rotor brushless DC motor | |
| CN205666746U (en) | Outer rotor brushless DC motor | |
| JP5050538B2 (en) | Motor cooling structure | |
| KR100660305B1 (en) | Brushless d.c motor | |
| CN101728893B (en) | Outer rotor motor | |
| EP3657025B1 (en) | Cross-flow impeller device and cooling fan | |
| KR20160097589A (en) | Electric water pump with filter assembly | |
| KR101222675B1 (en) | Stator for fan motor | |
| JP6857871B2 (en) | Electric tool | |
| CN206712587U (en) | Rotor mounting structure and blower fan system | |
| CN105703532A (en) | Dynamo-electric machine with a brake | |
| CN205051544U (en) | External rotor PMSM on casing is fixed to bearing | |
| JP6305312B2 (en) | Drive device | |
| JP7396586B2 (en) | Brushless DC motor and drum rotation device | |
| WO2013060070A1 (en) | Brushless direct current motor | |
| CN107171479A (en) | Rotor mounting structure and blower fan system | |
| CN205725305U (en) | Inner-rotor brushless direct current generator | |
| US20220034315A1 (en) | Electric oil pump | |
| JP2002330574A (en) | Air conditioner | |
| CN219177924U (en) | Air curtain machine | |
| KR20090127601A (en) | Motor assembly with reducer |
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: 20161019 Termination date: 20210531 |