CN203056770U - Brushless motor for chain saw - Google Patents
Brushless motor for chain saw Download PDFInfo
- Publication number
- CN203056770U CN203056770U CN 201220706575 CN201220706575U CN203056770U CN 203056770 U CN203056770 U CN 203056770U CN 201220706575 CN201220706575 CN 201220706575 CN 201220706575 U CN201220706575 U CN 201220706575U CN 203056770 U CN203056770 U CN 203056770U
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- Prior art keywords
- air inlet
- chain saw
- electric machine
- casing
- brushless electric
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- 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
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Abstract
Disclosed in the utility model is a brushless motor for a chain saw. The brushless motor comprises a casing, a stator iron core, a rotor iron core, and a main shaft penetrating into the casing; a centrifugal fan blade is arranged on the main shaft; and an air inlet and an air outlet are arranged on the casing. An airflow sucked by the centrifugal fan blade at the air inlet passes through the stator iron core and the rotor iron core and then flows out of the air outlet. According to the brushless motor provided by the utility model, the centrifugal fan blade, the air inlet and the air outlet are arranged to form an air channel penetrating the inside the casing and the air channel is used for removing the hot air inside the motor efficiently, so that the temperature rising of the motor is effectively controlled.
Description
Technical field
The utility model relates to a kind of chain saw brushless electric machine.
Background technology
At present, the electric chain saw that has on the market is most of to be adopted series excited machine and brush magnet steel motor is arranged, general only employing of the chain saw of direct current supply has this structure of brush magnet steel motor, the operating efficiency of these two kinds of motors is not high, direct current hand-held type chain saw for power-limited capacity, high operating efficiency is individual very important indicator, can prolong the service time of chain saw.There is the manufacturer of minority to begin to use brushless electric machine at the direct current chain saw now based on this point, because brushless electric machine is fit to the characteristics of low speed and large torque, the mode chain drive-belt that the direct current chain saw adopts brushless electric machine directly to export, removed gear box deceleration transmission part from, reduced power transmission loss, but the high-speed motion of chain can produce a large amount of heats, causes motor temperature too high.
Summary of the invention
Technical problem to be solved in the utility model just provide both simple in structure, get rid of the hot-air of motor internal efficiently, effectively control the temperature rise of motor, again a kind of chain saw brushless electric machine of rational deployment.
For solving the problems of the technologies described above, the utility model adopts following technical scheme, a kind of chain saw brushless electric machine, comprise casing, stator core, rotor core, be located in the main shaft in the described casing, also be provided with centrifugation blade on the described main shaft, described casing is provided with air inlet and air outlet, and the air-flow that centrifugation blade sucks from air inlet is through being flowed out by described air outlet behind stator core and the rotor core.
Preferably, described air inlet is located at the side away from described centrifugation blade, and described air outlet is located on the wall body of air-out direction of described centrifugation blade.
Preferably, described rotor core and described centrifugation blade are contained on the described main shaft side by side, and described stator core is around described rotor core.
Preferably, be provided with ventilation gap between described casing and the described stator core.
Preferably, described casing is provided with brace rod, and described stator core is contained on the described brace rod, and described brace rod is used for forming described ventilation gap between described stator core and described casing.Described brace rod makes the cold air that enters motor case can be cooled to the periphery of stator core through described ventilation gap, and described casing inner support muscle has strengthened the area of dissipation of motor, the temperature rise when having reduced machine operation.
Preferably, the inwall of described casing also is provided with deep bead, described deep bead to described stator core direction along the camber line bending.Described deep bead prevents the backflow of wind between centrifugal fan and the electric machine rotor, improves the ventilation efficiency of fan blade.
Preferably, described air inlet radially distributes, and described air inlet comprises inner ring air inlet and outer ring air inlet, and described inner ring air inlet and described outer ring air inlet are along radiating direction side by side or being staggered.Described inner ring air inlet and described outer ring air inlet guarantee that the cold air of capacity can feed, and described casing leaves enough wall body materials simultaneously.
Preferably, also be provided with oil pump on the described casing, an end of described main shaft is installed the sprocket of chain drive-belt, and the other end of described main shaft and described oil pump are by the transmission of turbine and worm respective outer side edges.
Preferably, described casing is provided with fixed axis, and described oil pump is fixed on the described fixed axis by securing member.
A kind of chain saw of the utility model passes through described centrifugal fan and described air inlet and described air outlet with brushless electric machine, form an air channel of running through described casing inside, the cold air that sucks by described centrifugal fan fully carries out cold going to described stator core and described rotor core, gets rid of the hot-air of motor internal efficiently.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is a kind of chain saw of the utility model with the axial cutaway view of brushless electric machine;
Fig. 2 is a kind of chain saw of the utility model brushless electric machine radial cross-section;
Fig. 3 is the oil pump scheme of installation that a kind of chain saw of the utility model is used brushless electric machine.
Embodiment
As shown in Figure 1 to Figure 3, be a kind of chain saw brushless electric machine of the utility model, comprise casing, stator core 6, rotor core 7, be located in the main shaft 8 in the described casing, also be provided with centrifugation blade 4 on the described main shaft 8, described casing is provided with air inlet 90 and air outlet 30, the air-flow that described centrifugation blade 4 sucks from air inlet 90 is flowed out by described air outlet 30 through described stator core 6 and described rotor core 7 backs.
Described air inlet 90 is located at the side away from described centrifugation blade 4, and described air outlet 30 is located on the wall body of air-out direction of described centrifugation blade 4.The cold air that described centrifugation blade 4 sucks runs through described casing inside, fully flow through described stator core 7 and described rotor core 6, and radiating efficiency is very high.
Described rotor core 6 and described centrifugation blade 4 are contained on the described main shaft 8 side by side, and described stator core 7 is around described rotor core 6, and there are air gap in described stator core 7 and described rotor core 6.Described stator core 6 and described centrifugation blade 4 rotates synchronously with described main shaft 8, and under the effect of described centrifugation blade 4, the cold air described air gap of flowing through dispels the heat to described rotor core 6 and described stator core 7.
Be provided with ventilation gap between described casing and the described stator core 7.Described ventilation gap can make the flow through periphery of described stator core 7 of the cold air that enters from described air inlet 90, and described stator core 7 is further dispelled the heat.
Described ventilation gap can be realized by being provided with brace rod 91 at described casing, the uniform brace rod 91 of described casing inner wall, described brace rod encloses the periphery of putting at described stator core 7, forms a plurality of ventilation gaps between the described brace rod 91, is used to form the passage of cold air.And described brace rod has strengthened the area of dissipation of motor, the temperature rise when having reduced machine operation.
The inwall of described casing also is provided with deep bead 5, described deep bead to 5 described stator core 7 directions along the camber line bending.Described deep bead 5 prevents the backflow of wind between centrifugal fan and the electric machine rotor, improves the ventilation efficiency of fan blade.Described deep bead 5 is made as arc, help cooling blast is led, described deep bead 5 is towards the direction bending of described stator core 7, can make air-flow around described stator core 7, form local linking along described deep bead 5, last cooling blast focuses on described deep bead bottom, is rejected to described air outlet 30 by described centrifugation blade 4
Described air inlet 90 radially distributes, and described air inlet 90 comprises inner ring air inlet and outer ring air inlet, and described inner ring air inlet and described outer ring air inlet are along radiating direction side by side or being staggered.Described inner ring air inlet and described outer ring air inlet guarantee that the cold air of capacity can feed, and described casing leaves enough wall body materials simultaneously.Keep out the wind and mouthful can be located on the end or sidewall of described casing in described outer ring.
Described casing is provided with oil pump 11, and described oil pump 11 drives running by described main shaft 8.Described main shaft 8 can provide power by oil-feed pump 11 when driving described centrifugation blade 4 runnings.One end of described main shaft 8 is installed the sprocket 1 of chain drive-belt, and the other end of described main shaft and described oil pump 11 are by the transmission of turbine and worm respective outer side edges.Described main shaft 8 is provided with worm screw 80, and described oil pump 11 is provided with turbine 111.Worm screw can also be located on the described oil pump 11, turbine is located on the described main shaft 8.
Described back cabinet 9 is provided with fixed axis 92, and described oil pump 11 is fixed on the described fixed axis 92 by securing member 12.Make the fixed-site of oil pump 11, described worm gear 111 and described worm screw 80 be cooperating effectively.In the present embodiment, described securing member 12 is screw.
Described casing can be integral type or split type, and in the present embodiment, described casing is split type, and described casing comprises front housing 3 and the back cabinet 9 that links together with described front housing 3.Described front housing 3 is carried on the described main shaft 8 by clutch shaft bearing 2, and described back cabinet 9 is carried on the described main shaft 8 by second bearing 10.
Above-mentioned a kind of chain saw is used in a kind of direct current chain saw with brushless electric machine, and structure is known for those skilled in the art in the direct current chain saw, and concrete structure no longer describes in detail.
Claims (10)
1. chain saw brushless electric machine, comprise casing, stator core, rotor core, be located in the main shaft in the described casing, it is characterized in that: also be provided with centrifugation blade on the described main shaft, described casing is provided with air inlet and air outlet, the air-flow that described centrifugation blade sucks from air inlet is through being flowed out by described air outlet behind stator core and the rotor core.
2. a kind of chain saw brushless electric machine according to claim 1, it is characterized in that: described air inlet is located at the side away from described centrifugation blade, and described air outlet is located on the wall body of air-out direction of described centrifugation blade.
3. a kind of chain saw brushless electric machine according to claim 1, it is characterized in that: described rotor core and described centrifugation blade are contained on the described main shaft side by side, and described stator core is around described rotor core.
4. a kind of chain saw brushless electric machine according to claim 1 is characterized in that: be provided with ventilation gap between described casing and the described stator core.
5. a kind of chain saw brushless electric machine according to claim 4, it is characterized in that: described casing is provided with brace rod, described stator core is contained on the described brace rod, and described brace rod is used for forming described ventilation gap between described stator core and described casing.
6. a kind of chain saw brushless electric machine according to claim 1, it is characterized in that: the inwall of described casing also is provided with deep bead, described deep bead to described stator core direction along the camber line bending.
7. a kind of chain saw brushless electric machine according to claim 1, it is characterized in that: described air inlet radially distributes, described air inlet comprises inner ring air inlet and outer ring air inlet, and described inner ring air inlet and described outer ring air inlet are along radiating direction side by side or being staggered.
8. a kind of chain saw brushless electric machine according to claim 1 is characterized in that: also be provided with oil pump on the described casing, described oil pump drives running by described main shaft.
9. a kind of chain saw brushless electric machine according to claim 8 is characterized in that: an end of described main shaft is installed the sprocket of chain drive-belt, and the other end of described main shaft and described oil pump pass through the transmission of turbine and worm respective outer side edges.
10. a kind of chain saw brushless electric machine according to claim 8, it is characterized in that: described casing is provided with fixed axis, and described oil pump is fixed on the described fixed axis by securing member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220706575 CN203056770U (en) | 2012-12-19 | 2012-12-19 | Brushless motor for chain saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220706575 CN203056770U (en) | 2012-12-19 | 2012-12-19 | Brushless motor for chain saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203056770U true CN203056770U (en) | 2013-07-10 |
Family
ID=48739688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220706575 Expired - Fee Related CN203056770U (en) | 2012-12-19 | 2012-12-19 | Brushless motor for chain saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203056770U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066753A (en) * | 2012-12-19 | 2013-04-24 | 浙江亚特电器有限公司 | Brushless motor for chain saw |
| CN113266533A (en) * | 2021-06-02 | 2021-08-17 | 安徽三联学院 | Aerogenerator gear box with heat radiation structure |
-
2012
- 2012-12-19 CN CN 201220706575 patent/CN203056770U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066753A (en) * | 2012-12-19 | 2013-04-24 | 浙江亚特电器有限公司 | Brushless motor for chain saw |
| CN103066753B (en) * | 2012-12-19 | 2015-10-28 | 浙江亚特电器有限公司 | A kind of chain saw brushless electric machine |
| CN113266533A (en) * | 2021-06-02 | 2021-08-17 | 安徽三联学院 | Aerogenerator gear box with heat radiation structure |
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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 |
Granted publication date: 20130710 Termination date: 20161219 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |