CN205565924U - External rotor brushless motor is used to branches of tall trees saw - Google Patents
External rotor brushless motor is used to branches of tall trees saw Download PDFInfo
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- CN205565924U CN205565924U CN201620151989.0U CN201620151989U CN205565924U CN 205565924 U CN205565924 U CN 205565924U CN 201620151989 U CN201620151989 U CN 201620151989U CN 205565924 U CN205565924 U CN 205565924U
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Abstract
The utility model discloses an external rotor brushless motor is used to branches of tall trees saw belongs to electric tool technical field, has solved the bulky technical problem of brushless motor among the prior art, the utility model discloses an external rotor brushless motor is used to branches of tall trees saw, including casing and main shaft, install stator module and rotor subassembly on the main shaft, be equipped with air intake and air outlet on the casing, the casing cover is in the stator module and the rotor subassembly outside, the rotor subassembly sets up in the stator module outside, the rotor subassembly includes the rotor and sets up the fan blade in the rotor outside, when the rotor drove the fan blade rotation, the outside air was followed air inlet goes into follow in the casing the air outlet flows.
Description
[technical field]
This utility model relates to electric tool technical field, particularly relates to a kind of Gao Zhiju external rotor brushless electricity
Machine.
[background technology]
At present, on market, Gao Zhiju has typically used brush this structure of magnet steel motor, the work of both motors
Inefficient, for the direct current hand-held Gao Zhiju of limited current sourcing capability, high work efficiency is very
Important indicator, can extend the use time of Gao Zhiju.Based on this point, the manufacturer now with minority opens
Begin to use brushless electric machine in direct current lopper saw, owing to brushless electric machine has low speed, high torque, directly
The mode that stream Gao Zhiju uses brushless electric machine directly to export drives chain, eliminates gearbox speed reduction running part,
Decrease power transmission loss, but, the high-speed motion of chain can produce substantial amounts of heat, due to brushless electric machine head
Portion's heat radiation is bad, causes brushless electric machine temperature too high and lost efficacy, devises the brushless electric machine that can dispel the heat for this,
But the fan blade of brushless electric machine of the prior art is arranged on the main shaft of brushless electric machine, and fan blade is along with master
The rotation of axle and rotate, such setting not only extends the axial length of brushless electric machine, also increases brushless electricity
The overall volume of machine and taking up room.
[utility model content]
Problem to be solved in the utility model is just to provide a kind of Gao Zhiju outer rotor brushless motor, has
The feature that compact conformation, volume are little.
For solving above-mentioned technical problem, this utility model adopts the following technical scheme that
A kind of Gao Zhiju outer rotor brushless motor, including casing and main shaft, described main shaft is provided with stator
Assembly and rotor assembly, described casing is provided with air inlet and air outlet, described chassis cover at stator module and
Outside rotor assembly, described rotor assembly is arranged on outside stator module, described rotor assembly include rotor and
Being arranged on the fan blade outside rotor, when described rotor banding wind symptom leaf rotates, outside air enters from described air inlet
In entering described casing and flow out from described air outlet.
The fan blade of the Gao Zhiju outer rotor brushless motor in this utility model is arranged on the outside of rotor, contracting
The short axial length of brushless electric machine so that the overall structure of brushless electric machine is compacter, reduces brushless electricity
The volume of machine and installing space.
First specific embodiments: described fan blade is arranged on the rotor position near air inlet.It is so designed that,
It is more prone to suck and air-out.
Second specific embodiments: described brushless electric machine also includes the oil pump being connected with main shaft and is connected to casing
Interior wind scooper, described wind scooper covers on stator assembly and rotor assembly peripheral, and described oil pump is arranged on wind-guiding
On cover, described rotor assembly is by driving main axis, so that oil pump pumps out lubricating oil.Oil pump is placed in casing
Internal, it is to avoid the infringement that outer bound pair oil pump produces, the extraneous dirty oil pump of dust can be prevented effectively from again simultaneously enter
And pollution lubricating is oily, extend the service life of oil pump, additionally, oil pump is arranged on wind scooper, alleviate
The weight capacity of casing, simplifies the structure of casing, has beautified the outward appearance of casing.
3rd specific embodiments: described wind scooper is provided with fixing axle, described oil pump is fixed on described fixing axle
On.It is so designed that, the fixation to oil pump can be strengthened.
4th specific embodiments: be provided with the first passage connected with air inlet between described wind scooper and casing,
Being provided with the second channel connected with air outlet between described wind scooper and rotor assembly, described wind scooper is provided with
For connecting several air-guiding holes of first passage and second channel, described wind scooper will be for inhaling from air inlet
The air entered guides to air outlet.The air-flow entered in casing can be played good shunting and make by wind scooper
With, improve the radiating efficiency of brushless electric machine.
5th specific embodiments: described air inlet and air outlet are arranged on the rear end of casing.It is so designed that,
The air-flow in entrance casing can be enable to flow through all spaces of casing internal, improve dissipating of brushless electric machine
The thermal efficiency.
6th specific embodiments: described rotor is provided with air vent.It is so designed that so that air-flow enters fixed
In son, and the medial surface of stator and rotor is lowered the temperature.
7th specific embodiments: be provided with the stream connected with air vent between described rotor assembly and stator module
Logical gap.It is so designed that so that air can be through the periphery of described passage gaps cooling stator and rotor
Inner headed face, increase the area of dissipation of brushless electric machine, reduce brushless electric machine work time temperature rise.
8th specific embodiments: described stator module includes stator and stator support, described stator support is pacified
Being contained on main shaft and be connected with casing rear end, described stator sleeve is contained in the outside of stator support.It is so designed that,
The installation of stator can be played good fixing and supporting role.
9th specific embodiments: described oil pump is connected by worm gear structure with main shaft.
These features of the present utility model and advantage will be detailed in following detailed description of the invention, accompanying drawing
Disclose.
[accompanying drawing explanation]
Below in conjunction with the accompanying drawings this utility model is described further:
Fig. 1 is the axial section view of the structure of Gao Zhiju outer rotor brushless motor in this utility model preferred embodiment
Figure；
Fig. 2 is the structure radially section view of Gao Zhiju outer rotor brushless motor in this utility model preferred embodiment
Figure；
Fig. 3 is the assembling schematic diagram of Gao Zhiju outer rotor brushless motor in this utility model preferred embodiment.
[detailed description of the invention]
The technical scheme of this utility model embodiment is solved by the accompanying drawing below in conjunction with this utility model embodiment
Release and illustrate, but following embodiment is only preferred embodiment of the present utility model, and not all.Based on enforcement
Embodiment in mode, those skilled in the art are obtained other on the premise of not making creative work
Embodiment, broadly falls into protection domain of the present utility model.
As shown in figs. 1 and 3, the Gao Zhiju outer rotor brushless motor in this utility model preferred embodiment,
Including casing 1, main shaft 2, rotor assembly 3 and stator module 4, the rear end of main shaft 2 is provided with sprocket wheel 6, front
End is connected with oil pump 7 by worm gear structure, and in this utility model, main shaft 2 is provided with one end of worm screw and is
Front end, the other end is rear end, therefore in other structures, is front, away from worm screw with the one end near worm screw
One end be after, casing 1, rotor assembly 3 and stator module 4 are arranged on main shaft 2, wherein in casing 1
Being provided with air inlet 10 and air outlet 11, casing 1 both can be integral structure, it is also possible to be split-type structural,
For the ease of casing 1 being arranged on main shaft 2, the casing 1 in this utility model is split-type structural, including
Chassis cover and chassis base, chassis base is arranged on the rear end of main shaft 2, and chassis cover is assemblied on chassis base,
Stator module 4 includes stator 40 and stator support 41, and the two ends of stator support 41 are arranged on master by bearing
On axle 2, and being connected with chassis base, stator 40 is arranged on the outside of stator support 41, stator support 41
The installation of stator 40 can be played good fixing and supporting role.Rotor assembly 3 includes rotor 30 and some
Individual fan blade 31, rotor 30 is fixed on main shaft 2, and fan blade 31 is provided at circumferentially spaced the periphery at rotor 30
On, compared with prior art, the position that the fan blade 31 in this utility model is arranged shortens the axle of brushless electric machine
To length and volume, there is the feature of compact conformation.Furthermore, now fan blade 31 belongs to driving link, decreases
Energy loss during Multi-stage transmission, has the feature of power and energy saving.
If Fig. 2 is to shown in 3, being additionally provided with wind scooper 5 in casing 1, wind scooper 5 covers on rotor assembly 3
Periphery, the front end of main shaft 2 extends outside wind scooper 5 and is positioned at casing 1, at casing 1 and wind scooper 5
Between be provided with first passage 15, first passage 15 connects with air inlet 10, at wind scooper 5 and rotor assembly 3
Between be provided with second channel 53, second channel 53 connects with air outlet 11, wind scooper 5 is provided with for
Connection first passage 15 and several air-guiding holes 50 of second channel 53, when rotor 30 rotates, drive fan blade
31 circumferentially rotate, and make casing 1 internal generation low pressure, and outside air is under atmospheric pressure from air inlet 10
Entering in casing 1, and form cooling air-flow, cooling air-flow enters the through air-guiding hole 50 in first passage 15
Two passages 53, and under the rotation of fan blade 31, flow out from air outlet 11.Cooling air-flow is in flow process
Oil pump 7 and the heat of rotor assembly 3 generation can be taken away, effectively reduce the temperature of brushless electric machine.Additionally, lead
The cooling air-flow entered in casing 1 can be played good shunting action by the air-guiding hole 50 on fan housing 5, anti-
Only cooling air-flow is in casing 1 internal reflux, improves the ventilation efficiency of fan blade 31, improves the heat radiation of brushless electric machine
Efficiency.The corner of the wind scooper 5 in this utility model is set to rounding, contributes to leading cooling air-flow
To effect.
Be additionally provided with several air vents 300 on the front end face of rotor 30 of the present utility model, rotor assembly 3 with
Being provided with passage gaps 34 between stator module 4, passage gaps 34 communicates with air vent 300, so enters
Cooling air-flow in two passages 53 shunts, through air vent 300, the gap 34 that can circulate, thus cools down stator 40
Periphery and the inner headed face of rotor 30, increase the area of dissipation of brushless electric machine, reduce brushless electric machine work
Temperature rise when making.
In order to enable cooling air-flow to run through the inside of casing 1, the inside of casing 1 is carried out omnibearing dissipating
Heat, air inlet 10 in this utility model and air outlet 11 are preferably provided at the both sides up and down of the rear end of casing 1,
I.e. air inlet 10 is arranged on the position that the rear end face of chassis base is top, and air outlet 11 is arranged on chassis base
Rear end face position on the lower, so that the processing of chassis base is simpler, the casing in this utility model
It is covered with breach, after chassis cover and chassis base have assembled, goes out described in formation between breach and chassis base
Air port 11, is so designed that, the flow direction cooling down air-flow formed from the air of air inlet 10 suction is: by
Chassis base flows to the front end of chassis cover, and sequentially passes through air-guiding hole 50, air vent 300 and circulation from front end
Chassis base is flowed back in gap 34, finally discharges from air outlet 11, in the flow process of whole cooling air-flow,
All structures of brushless electric machine are the most effectively lowered the temperature, and substantially increase its radiating efficiency, effectively extend
Its service life.
In other embodiments of the present utility model, air inlet can also be provided at the front end face of casing, air outlet
Being arranged on the position near rear end, the bottom of casing, or location swap, those skilled in the art are according to reality
Situation can carry out free setting to the position of air inlet and air outlet, no longer describes in detail at this, and it is all at this
In protection domain required by utility model.
As it is shown on figure 3, in order to make rotor assembly 3 when rotating, be more prone to inhales outside air
The air-flow entered and discharge in casing 1, the fan blade 31 in this utility model is arranged on rotor 30 near air inlet
The position of 10, the namely rear end of rotor 30, now fan blade 31 is also close to air outlet 11.
In this utility model, the front end face of wind scooper 5 is provided with fixing axle 52, and oil pump 7 is installed by securing member 8
On fixing axle 52, securing member 8 is screw, and during brushless electric machine work, rotor assembly 3 rotarily drives main shaft
2 operatings, thus drive oil pump 7 operating to pump out lubricating oil, the lubricating oil pumped out leads on chain, for cutting at a high speed
The chain cut provides lubrication.It is so designed that, has the benefit that 1, avoids outer bound pair oil pump 7 to cause damage,
The service life of oil pump 7 can be extended；2, oil pump 7 clean has been effectively ensured, has prevented dust pollution lubricating
Oil；3, oil pump 7 is arranged on wind scooper 5, alleviates the weight capacity of casing 1, simplifies casing 1
Structure, has beautified the outward appearance of casing 1；4, when cooling air-flow circulates in first passage 15, cooling air-flow can
To reduce temperature when oil pump 7 works, prevent it overheated and lost efficacy.
The above, detailed description of the invention the most of the present utility model, but protection domain of the present utility model is also
It is not limited to this, is familiar with this those skilled in the art and should be understood that this utility model includes but not limited to accompanying drawing
Content described in detailed description of the invention above.Any without departing from function of the present utility model and structural principle
Amendment be intended to be included in the scope of claims.
Claims (10)
1. a Gao Zhiju outer rotor brushless motor, including casing and main shaft, it is fixed that described main shaft is provided with
Sub-component and rotor assembly, described casing is provided with air inlet and air outlet, and described chassis cover is at stator module
Outside rotor assembly, it is characterised in that: described rotor assembly is arranged on outside stator module, described rotor
Assembly includes rotor and is arranged on the fan blade outside rotor, when described rotor banding wind symptom leaf rotates, and outside air
Enter in described casing from described air inlet and flow out from described air outlet.
Gao Zhiju outer rotor brushless motor the most according to claim 1, it is characterised in that: described wind
Leaf is arranged on the rotor position near air inlet.
Gao Zhiju outer rotor brushless motor the most according to claim 1, it is characterised in that: described nothing
Brush motor also includes the oil pump being connected with main shaft and the wind scooper being connected in casing, and described wind scooper covers on fixed
Sub-component and rotor assembly are peripheral, and described oil pump is arranged on wind scooper, and described rotor assembly is main by driving
Axle rotates, so that oil pump pumps out lubricating oil.
Gao Zhiju outer rotor brushless motor the most according to claim 3, it is characterised in that lead described in:
Fan housing is provided with fixing axle, and described oil pump is fixed on described fixing axle.
Gao Zhiju outer rotor brushless motor the most according to claim 3, it is characterised in that lead described in:
It is provided with the first passage connected with air inlet between fan housing with casing, sets between described wind scooper and rotor assembly
The second channel connected with air outlet, described wind scooper is had to be provided with for connecting first passage and second channel
Several air-guiding holes, described wind scooper for the air guiding that will suck from air inlet at air outlet.
Gao Zhiju outer rotor brushless motor the most according to claim 5, it is characterised in that enter described in:
Air port and air outlet are arranged on the rear end of casing.
Gao Zhiju outer rotor brushless motor the most according to claim 6, it is characterised in that: described turn
Son is provided with air vent.
Gao Zhiju outer rotor brushless motor the most according to claim 7, it is characterised in that: described turn
The passage gaps connected with air vent it is provided with between sub-component with stator module.
9. according to the Gao Zhiju outer rotor brushless motor one of claim 1 to 8 Suo Shu, it is characterised in that:
Described stator module includes that stator and stator support, described stator support are arranged on main shaft and and casing rear end
Connecting, described stator sleeve is contained in the outside of stator support.
10. according to the Gao Zhiju outer rotor brushless motor one of claim 3 to 8 Suo Shu, it is characterised in that:
Described oil pump is connected by worm gear structure with main shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620151989.0U CN205565924U (en) | 2016-02-27 | 2016-02-27 | External rotor brushless motor is used to branches of tall trees saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620151989.0U CN205565924U (en) | 2016-02-27 | 2016-02-27 | External rotor brushless motor is used to branches of tall trees saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205565924U true CN205565924U (en) | 2016-09-07 |
Family
ID=56819335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620151989.0U Active CN205565924U (en) | 2016-02-27 | 2016-02-27 | External rotor brushless motor is used to branches of tall trees saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205565924U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108312018A (en) * | 2018-03-07 | 2018-07-24 | 浙江亚特电器有限公司 | A kind of hand held electric tool |
| CN109291012A (en) * | 2017-07-24 | 2019-02-01 | 英古所连公司 | Electric tool |
| CN110994868A (en) * | 2019-12-25 | 2020-04-10 | 明程电机技术（深圳）有限公司 | High-speed motor structure with internal ventilation cooling |
| CN112436637A (en) * | 2020-12-03 | 2021-03-02 | 江苏苏美达五金工具有限公司 | Brushless motor with outer rotor structure for cleaning machine |
-
2016
- 2016-02-27 CN CN201620151989.0U patent/CN205565924U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109291012A (en) * | 2017-07-24 | 2019-02-01 | 英古所连公司 | Electric tool |
| CN108312018A (en) * | 2018-03-07 | 2018-07-24 | 浙江亚特电器有限公司 | A kind of hand held electric tool |
| CN108312018B (en) * | 2018-03-07 | 2023-10-13 | 浙江亚特电器股份有限公司 | Hand-held electric tool |
| CN110994868A (en) * | 2019-12-25 | 2020-04-10 | 明程电机技术（深圳）有限公司 | High-speed motor structure with internal ventilation cooling |
| CN110994868B (en) * | 2019-12-25 | 2021-06-08 | 明程电机技术（深圳）有限公司 | High-speed motor structure with internal ventilation cooling |
| CN112436637A (en) * | 2020-12-03 | 2021-03-02 | 江苏苏美达五金工具有限公司 | Brushless motor with outer rotor structure for cleaning machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 150 Wenlong Road, Yuxin Town, Nanhu District, Jiaxing City, Zhejiang Province Patentee after: Zhejiang Yate Electric Appliance Co.,Ltd. Address before: Jiaxing City, Zhejiang province 314100 Nanhu District Yu Xin Zhen Industrial Zone North Water Road No. 1 Patentee before: ZHEJIANG YAT ELECTRICAL APPLIANCE Co.,Ltd. |