CN208955767U - A kind of outer rotor brushless motor - Google Patents
A kind of outer rotor brushless motor Download PDFInfo
- Publication number
- CN208955767U CN208955767U CN201821688316.4U CN201821688316U CN208955767U CN 208955767 U CN208955767 U CN 208955767U CN 201821688316 U CN201821688316 U CN 201821688316U CN 208955767 U CN208955767 U CN 208955767U
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- outer rotor
- shaft
- stator
- bearing
- shaft sleeve
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- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- 230000000694 effects Effects 0.000 claims description 9
- 238000009423 ventilation Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The utility model discloses a kind of outer rotor brushless motors, including shaft, stator, outer rotor and stator seat；Stator grafting stator seat, outer rotor are socketed stator, and shaft one end connects outer rotor, and other end grafting stator seat further includes bearing block, and fixing sleeve is connected to first bearing in bearing block；Stator seat is equipped with shaft sleeve, and the bottom fixing sleeve of shaft sleeve is connected to second bearing；One end grafting shaft sleeve of stator, other end grafting bearing block；After one end grafting of shaft passes through shaft sleeve, the fixed grafting second bearing in bottom end；After the other end grafting of shaft passes through the first bearing of bearing block, the fixed grafting outer rotor in top.The outer rotor brushless motor of the utility model replaces inner-rotor brushless motor to ensure that the stability under the high revolving speed of motor and high torque state by the cooperation of shaft sleeve and bearing block；Compared with traditional internal rotor electric tool, has higher torque and revolving speed, and compact, improve electric efficiency.
Description
Technical field
The utility model relates to motor field, specifically a kind of outer rotor brushless motor.
Background technique
With the continuous development of motor technology, the motor in existing market can be mainly divided into external rotor electric machine and internal rotor
Motor.Motor used in electric tool in existing market is mostly inner rotor motor.Inner rotor motor is as earliest developing
Its application range of motor technology covers many fields.Application wherein in small-sized electric tool is just very extensive, and in other
Rotor electric machine tool is the same, and the inner rotor motor structure of the type electric tool includes internal rotor, stator, stator seat, passes through
Internal rotor is driven and then drives the work of internal rotor electric tool.The electric tool of inner rotor motor is used in existing market,
Design is if it is intended to obtain higher electric efficiency and higher revolving speed and torque, it is necessary to the volume of expanded motor, in turn
Cause the design volume of such motor bigger, is not easy to miniaturization, high revolving speed and the high torque development of electric tool.
Utility model content
In view of the above situation, it is necessary to a kind of outer rotor brushless motor be provided, the electricity using inner rotor motor is able to solve
Power driven tools, when obtaining higher electric efficiency and higher revolving speed and torque, just must expanded motor design volume
Problem, and then enable to such motor can be more compact and have higher electric efficiency and revolving speed and torque.
To solve the above problems, a kind of outer rotor brushless motor of the utility model, including shaft, stator, outer rotor and fixed
Stroma；The stator is fixedly plugged on the stator seat, and the outer rotor is socketed in the outside of the stator；The shaft one
It holds and is fixedly connected with the outer rotor, after stator described in activity grafting, stator seat described in other end activity grafting；It further includes axis
Seat is held, fixing sleeve is connected to first bearing in the bearing block；The stator seat is equipped with shaft sleeve, the bottom of the shaft sleeve
Fixing sleeve is connected to second bearing；
Shaft sleeve described in one end grafting of the stator, bearing block described in other end grafting；It inserts one end of the shaft
It connects after the shaft sleeve, second bearing described in the fixed grafting in bottom end；The other end grafting of the shaft passes through described
After the first bearing of bearing block, outer rotor described in the fixed grafting in top.
In a kind of outer rotor brushless motor of the utility model, the shaft sleeve is in the cylindrical-shaped structure with through-hole,
The stator is equipped with a shaft sleeve jack, and the outer diameter of the shaft sleeve is identical as the aperture of the shaft sleeve jack；Institute
It states shaft sleeve to be plugged in the shaft sleeve jack, the length is the 3/4 of the shaft sleeve jack length.
In a kind of outer rotor brushless motor of the utility model, the bearing block is equipped with shaft hole and first axle bearing bore, institute
It states and is fixedly installed with the first bearing in first axle bearing bore, one end activity that the bearing block is equipped with shaft hole is plugged on described
In shaft sleeve jack, the through-hole aperture that the aperture of the shaft hole is covered with the shaft matches.
In a kind of outer rotor brushless motor of the utility model, the outer rotor includes front cover, iron-clad, magnet and magnet steel
Circle；The magnet is fixed in the iron-clad, and the magnetic steel ring is fixed on the bottom end of the iron-clad, and the front cover is fixed on described
The top of iron-clad；The lid of the front cover is equipped with multiple front cover ventilation holes.
It further include wind wheel in a kind of outer rotor brushless motor of the utility model, the wind wheel is equipped with multiple fan blades,
The fan blade is symmetrically distributed on the wind wheel, and the wind wheel, which is fixed on, to be plugged in the shaft, is located at external rotor brushless
One end of the front cover of motor.
It further include gasket and flexible steel ring in a kind of outer rotor brushless motor of the utility model；The shaft grafting
One end of the second bearing is equipped with steel ring slot, and the flexible steel ring is fixed in the steel ring slot, the gasket socket
Between the second bearing and the flexible steel ring.
In a kind of outer rotor brushless motor of the utility model, the stator seat is equipped with multiple stator seat ventilation holes.
It further include power supply line in a kind of outer rotor brushless motor of the utility model, the power supply line and the stator
It is electrically connected.
A kind of outer rotor brushless motor generation for having the beneficial effect that the utility model of outer rotor brushless motor of the utility model
For inner-rotor brushless motor, shaft sleeve and the bearing block with absolute construction are devised, shaft sleeve and bearing block are passed through
Cooperation, improve stator seat for the enabling capabilities of shaft, ensure that the motor operation under high revolving speed and high torque state
Stability, design improvement and application by external rotor electric machine ensure that motor can have higher torque and revolving speed, and body
Product is small and exquisite；The outer rotor brushless motor of the utility model is applied in traditional internal rotor field of power tools, has small in size, torsion
The advantage that square is big and revolving speed is high.
Detailed description of the invention
Fig. 1 is a kind of three-dimensional view of outer rotor brushless motor of the utility model；
Fig. 2 is a kind of dismantling three-dimensional view of outer rotor brushless motor of the utility model；
Fig. 3 is a kind of main view of outer rotor brushless motor of the utility model；
Fig. 4 is the cross-sectional view in Fig. 3 at A-A.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model.
Referring to Figure 1 to Fig. 4, in a kind of outer rotor brushless motor of the utility model comprising shaft 1, stator 2, outer
Rotor 3 and stator seat 4；Stator 2 is fixedly plugged on stator seat 4, and outer rotor 3 is socketed in the outside of stator 2；1 one end of shaft is solid
Surely outer rotor 3 is connected, after activity grafting stator 2, other end activity grafting stator seat 4 further includes bearing block 5, bearing block 5
Interior fixing sleeve is connected to first bearing 51；Stator seat 4 is equipped with shaft sleeve 41, and the bottom fixing sleeve of shaft sleeve 41 is connected to the second axis
Hold 411.One end grafting shaft sleeve 41 of stator 2, other end grafting bearing block 5；One end grafting of shaft 1 passes through shaft sleeve
After 41, the fixed grafting second bearing 411 in bottom end；After the other end grafting of shaft 1 passes through the first bearing 51 of bearing block 5,
Grafting outer rotor 3 is fixed on top.
Fig. 2 and Fig. 4 are referred to, in the present embodiment, shaft sleeve 41 is in the cylindrical-shaped structure with through-hole, and stator 2 is set
There is a shaft sleeve jack 21, the outer diameter of shaft sleeve 41 is identical as the aperture of shaft sleeve jack 21；41 grafting of shaft sleeve
In shaft sleeve jack 21, the length is the 3/4 of 41 jack length of shaft sleeve, shaft sleeve 41 increase stator seat 4 with
The contact area of shaft 1, and then improve supporting role of the stator seat 4 for shaft 1, external rotor electric through this embodiment
Machine replaces the inner rotor motor in traditional internal rotor electric tool, improves electric tool and runs in high revolving speed and high torque
Under the conditions of stability, and reduce shaft 1 for the pressure of second bearing 411, realize electric tool in smaller motor
In the case of volume, the working effect of higher revolving speed and torque can be obtained.
Fig. 2 and Fig. 4 are referred to, in the present embodiment, bearing block 5 is equipped with shaft hole 52 and first axle bearing bore 53, first axle
First bearing 51 is fixedly installed in bearing bore 53, one end activity that bearing block 5 is equipped with shaft hole 52 is plugged on shaft sleeve jack
In 21, the aperture of shaft hole 52 and the through-hole aperture of shaft sleeve 41 match, 5 independent design of bearing block, in the feelings of its damage
It can quickly be replaced under condition, this makes the maintenance of equipment more flexible, while reducing the cost of maintenance, improves and sets
Standby service life.
Fig. 2 and Fig. 4 are referred to, in the present embodiment, outer rotor 3 includes front cover 31, iron-clad 32, magnet 33 and magnetic steel ring
34；Magnet 33 is fixed in iron-clad 32, and magnetic steel ring 34 is fixed on the bottom end of iron-clad 32, and front cover 31 is fixed on the top of iron-clad 32；
The lid of front cover 31 is equipped with multiple front cover ventilation holes 311, and front cover ventilation hole 311 makes the air flow property inside motor more
Sufficiently, be conducive to the rapid cooling of motor.
Fig. 4 is referred to, further includes wind wheel 6 in the present embodiment, wind wheel 6 is equipped with multiple fan blades 61, and fan blade 61 is symmetrical
It is distributed on wind wheel 6, wind wheel 6, which is fixed on, to be plugged in shaft 1, and one end of the front cover 31 of outer rotor brushless motor, wind are located at
Running at high speed for wheel 6 can generate biggish wind-force, and then accelerate the heat dissipation of motor.
Fig. 2 is referred to, further includes gasket 7 and flexible steel ring 8 in the present embodiment；1 grafting second bearing 411 of shaft
One end be equipped with steel ring slot 11, flexible steel ring 8 is fixed in steel ring slot 11, and gasket 7 is socketed in second bearing 411 and bullet
Between property steel ring 8.
Fig. 2 is referred to, in the present embodiment, stator seat 4 is equipped with multiple stator seat ventilation holes 42, stator seat ventilation hole 42
So that the air flow property inside motor is more abundant, be conducive to the rapid cooling of motor.
Fig. 2 is referred to, further includes power supply line 9 in the present embodiment, power supply line 9 and stator 2 are electrically connected.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation be not intended to limit the utility model although the utility model has been disclosed with preferred embodiment as above, it is any ripe
Professional and technical personnel is known, is not being departed within the scope of technical solutions of the utility model, when in the technology using the disclosure above
Hold the equivalent embodiment for being modified or being modified to equivalent variations, but all without departing from technical solutions of the utility model
Hold, any simple modification, equivalent change and modification made by the above technical examples according to the technical essence of the present invention, still
It is within the scope of the technical solutions of the present invention.
Claims (8)
1. a kind of outer rotor brushless motor, including shaft (1), stator (2), outer rotor (3) and stator seat (4)；The stator (2)
It is fixedly plugged on the stator seat (4), the outer rotor (3) is socketed in the outside of the stator (2)；The shaft (1) one
End is fixedly connected the outer rotor (3), after stator (2) described in activity grafting, stator seat (4) described in other end activity grafting,
It is characterized by also including bearing block (5), the interior fixing sleeve of the bearing block (5) is connected to first bearing (51)；The stator seat
(4) shaft sleeve (41) are equipped with, the bottom fixing sleeve of the shaft sleeve (41) is connected to second bearing (411)；
Shaft sleeve (41) described in one end grafting of the stator (2), bearing block (5) described in other end grafting；The shaft (1)
One end grafting pass through the shaft sleeve (41) after, second bearing (411) described in the fixed grafting in bottom end；The shaft (1)
Other end grafting pass through the first bearing (51) of the bearing block (5) after, outer rotor described in the fixed grafting in top
(3)。
2. a kind of outer rotor brushless motor as described in claim 1, it is characterised in that: the shaft sleeve (41) is in logical
The cylindrical-shaped structure in hole, the stator (2) be equipped with a shaft sleeve jack (21), the outer diameter of the shaft sleeve (41) with it is described
The aperture of shaft sleeve jack (21) is identical；The shaft sleeve (41) is plugged in the shaft sleeve jack (21), length
Degree is the 3/4 of the shaft sleeve (41) jack length.
3. a kind of outer rotor brushless motor as claimed in claim 2, it is characterised in that: the bearing block (5) is equipped with shaft hole
(52) and first axle bearing bore (53) first bearing (51), the bearing, are fixedly installed in the first axle bearing bore (53)
One end activity that seat (5) is equipped with shaft hole (52) is plugged in the shaft sleeve jack (21), the hole of the shaft hole (52)
Diameter and the through-hole aperture of the shaft sleeve (41) match.
4. a kind of outer rotor brushless motor as described in claim 1, it is characterised in that: the outer rotor (3) includes front cover
(31), iron-clad (32), magnet (33) and magnetic steel ring (34)；The magnet (33) is fixed in the iron-clad (32), the magnet steel
Circle (34) is fixed on the bottom end of the iron-clad (32), and the front cover (31) is fixed on the top of the iron-clad (32)；The front cover
(31) lid is equipped with multiple front cover ventilation holes (311).
5. a kind of outer rotor brushless motor as claimed in claim 4, it is characterised in that: further include wind wheel (6), the wind wheel
(6) multiple fan blades (61) are equipped with, the fan blade (61) is symmetrically distributed on the wind wheel (6), and the wind wheel (6) is fixed on slotting
It connects on the shaft (1), is located at one end of the front cover (31) of outer rotor brushless motor.
6. a kind of outer rotor brushless motor as described in claim 1, it is characterised in that: it further includes gasket (7) and Elastic Steel
It encloses (8)；One end of second bearing (411) described in shaft (1) grafting is equipped with steel ring slot (11), flexible steel ring (8) card
It connects and is fixed in the steel ring slot (11), the gasket (7) is socketed in the second bearing (411) and the flexible steel ring (8)
Between.
7. a kind of outer rotor brushless motor as described in claim 1, it is characterised in that: the stator seat (4) is equipped with multiple
Stator seat ventilation hole (42).
8. a kind of outer rotor brushless motor as described in claim 1, it is characterised in that: it further includes power supply line (9), the electricity
Source line (9) and the stator (2) are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821688316.4U CN208955767U (en) | 2018-10-18 | 2018-10-18 | A kind of outer rotor brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821688316.4U CN208955767U (en) | 2018-10-18 | 2018-10-18 | A kind of outer rotor brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208955767U true CN208955767U (en) | 2019-06-07 |
Family
ID=66741900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821688316.4U Active CN208955767U (en) | 2018-10-18 | 2018-10-18 | A kind of outer rotor brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208955767U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110768415A (en) * | 2019-10-10 | 2020-02-07 | 深圳市恒驱电机股份有限公司 | Ultra-high speed motor |
| CN117040171A (en) * | 2023-04-28 | 2023-11-10 | 东莞市小强电子科技有限公司 | High stable external rotor brushless motor |
-
2018
- 2018-10-18 CN CN201821688316.4U patent/CN208955767U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110768415A (en) * | 2019-10-10 | 2020-02-07 | 深圳市恒驱电机股份有限公司 | Ultra-high speed motor |
| CN117040171A (en) * | 2023-04-28 | 2023-11-10 | 东莞市小强电子科技有限公司 | High stable external rotor brushless motor |
| CN117040171B (en) * | 2023-04-28 | 2024-04-16 | 东莞市小强电子科技有限公司 | High stable external rotor brushless motor |
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