CN202059304U - Scooter direct current brushless motor with large length-diameter ratio - Google Patents
Scooter direct current brushless motor with large length-diameter ratio Download PDFInfo
- Publication number
- CN202059304U CN202059304U CN2011201690453U CN201120169045U CN202059304U CN 202059304 U CN202059304 U CN 202059304U CN 2011201690453 U CN2011201690453 U CN 2011201690453U CN 201120169045 U CN201120169045 U CN 201120169045U CN 202059304 U CN202059304 U CN 202059304U
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- shell
- motor
- end cap
- right end
- brushless motor
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- Expired - Fee Related
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- Permanent Magnet Type Synchronous Machine (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The present utility model belongs to the brushless direct current motor field, specifically to a scooter direct current brushless motor with large length-diameter ratio. The brushless motor comprises a shell (6) and a rotor shaft (2), the two ends of the shell are respectively provided with a left end cover (8) and a right end cover (7), a magnetic steel (5) is arranged inside the shell, the rotor shaft (2) is arranged on the left end cover (8) and the right end cover (7) through a first bearing (3) and a second bearing (4), and a stator is fixed on the rotor shaft (2). When the new motor is in high speed rotation, a strong air flow is formed inside to make the interior air temperature uniform and increase thermal convection, thus the energy can be passed on the shell and the left and right end covers as soon as possible; as the motor is a outward rotating type, the outside superficial area is rather large, thus the heat dissipation area is increased. Moreover, the new motor has high power density and large power, the characteristics of increasing torque and requiring small diameter can be satisfied by adopting the large length-diameter ratio, and the service life of the motor can be prolonged.
Description
Technical field
The utility model belongs to the brshless DC motor field, is specially big L/D ratio scooter dc brushless motor.
Background technology
Main heat production components and parts have two in brshless DC motor, and one is the electromagnetic wire heating that is wound on the stator, and another is the iron loss heating of stator core, and both work and produce heat and cause electric machine temperature rise too high, cause electrical machinery life too short at last.The volume of such motor is bigger in the prior art, and power density is little, and the motor heat can not in time distribute, and the heat height usually causes the lost of life of electronics.
Summary of the invention
The utility model is just at above technical problem, but provides the volume of a kind of composite radiating, motor less, big L/D ratio scooter dc brushless motor that power density increases.
To achieve these goals, the technical solution adopted in the utility model is such:
Big L/D ratio scooter dc brushless motor, comprise shell and armature spindle, the two ends of shell are provided with left end cap and right end cap respectively, and the inside of shell is provided with magnet steel, armature spindle is arranged on left end cap and the right end cap by bearing one and bearing two, is fixed with stator on the armature spindle.
Described shell is a rotor, and is the bidirectional helical face
The inside of described left end cap and right end cap is provided with radiator, and the inboard of left end cap and right end cap is provided with the vortex fan blade, and arranged outside has the heat radiation rib.
Described shell is a rotor, and rotor is in the outside of stator.
Shell, magnet steel, left end cap and right end cap are formed composite rotors, the inboard of left end cap and right end cap is provided with the vortex fan blade, arranged outside has the heat radiation rib, when the motor high speed rotating, the inner on the one hand air blast that forms, make Inside Air Temperature even, increase thermal convection, heat can be delivered on casing and the left and right sides end cap as early as possible; On the other hand, because motor is an outward rotation type, external surface area is bigger, increases area of dissipation; The shell of motor is a rotor, is again moment of torsion diameter output block, directly is connected with the tire of scooter, and shell is a bidirectional helical, forms many rough grooves, and tire is cooperated closely with casing, reaches the purpose of transfer torque.
Good effect of the present utility model is embodied in: power of motor density height, power are big, the employing big L/D ratio can satisfy moment of torsion and the little characteristics of diameter requirement of increasing, and motor increases useful life.
Description of drawings
Figure l is a final assembly cross-sectional view of the present utility model.
Fig. 2 is the inside structure schematic diagram of left end cap or right end cap in the utility model.
Fig. 3 is the outboard structure schematic diagram of left end cap or right end cap in the utility model.
Fig. 4 is the structural representation of shell rotor in the utility model.
Wherein, 1---stator, 2---armature spindle, 3---bearing one, 4---bearing two, 5---magnet steel, 6---shell, 7---right end cap, 8---left end cap.
Embodiment
The utility model is described in further detail below in conjunction with Figure of description and specific embodiment.
Embodiment 1:
According to shown in Figure 1, big L/D ratio scooter dc brushless motor, include shell, dress magnet steel in the shell, the shell two ends are respectively left end cap and right end cap, and armature spindle passes bearing, bearing bracket stand is located at a left side, right two end cap, stator is fixed on the armature spindle, the line bag is installed on the armature spindle, conductor wire is drawn from the oblique sky in the center of armature spindle, and when machine operation, armature spindle is motionless, just stator does not move, rotor case rotates, rotor and casing, magnet steel, left and right sides end cap is formed composite rotors, and there is the vortex fan blade end cap inboard, the left and right sides, arranged outside heat radiation rib, during the motor high speed rotating, the inner on the one hand air blast that forms makes Inside Air Temperature even, increase thermal convection, make heat can be delivered to a shell and a left side as early as possible, on the right end cap; On the other hand, because motor is an outward rotation type, external surface area is bigger, increases area of dissipation; The shell of motor is a rotor, is again moment of torsion diameter output block, directly is connected with the tire of scooter, and shell is the bidirectional helical face, forms many rough grooves, and tire is cooperated closely with casing, reaches the purpose of transfer torque.Motor improves power in order to increase moment of torsion, satisfies the less requirement of diameter again, so the application adopts big L/D ratio, high power density so just can well be dispelled the heat.It is low that this technical scheme has solved similar power of motor density with regard to perfection, and power is little, and volume is big, and moment of torsion is little, and caloric value is big, all defect that temperature is high.
Claims (4)
1. big L/D ratio scooter dc brushless motor, comprise shell (6) and armature spindle (2), it is characterized in that: the two ends of shell are provided with left end cap (8) and right end cap (7) respectively, the inside of shell is provided with magnet steel (5), armature spindle (2) is arranged on left end cap (8) and the right end cap (7) by bearing one (3) and bearing two (4), is fixed with stator (1) on the armature spindle (2).
2. big L/D ratio scooter dc brushless motor according to claim 1 is characterized in that: described shell (6) is a rotor, and is the bidirectional helical face.
3. big L/D ratio scooter dc brushless motor according to claim 1, it is characterized in that: the inside of described left end cap (8) and right end cap (7) is provided with radiator, the inboard of left end cap (8) and right end cap (7) is provided with the vortex fan blade, and arranged outside has the heat radiation rib.
4. big L/D ratio scooter dc brushless motor according to claim 1 is characterized in that: described shell (6) is a rotor structure, and rotor is in the outside of stator (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201690453U CN202059304U (en) | 2011-05-25 | 2011-05-25 | Scooter direct current brushless motor with large length-diameter ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201690453U CN202059304U (en) | 2011-05-25 | 2011-05-25 | Scooter direct current brushless motor with large length-diameter ratio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202059304U true CN202059304U (en) | 2011-11-30 |
Family
ID=45019267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201690453U Expired - Fee Related CN202059304U (en) | 2011-05-25 | 2011-05-25 | Scooter direct current brushless motor with large length-diameter ratio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202059304U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107154707A (en) * | 2017-07-06 | 2017-09-12 | 明程电机技术（深圳）有限公司 | Air convection type heat radiation motor |
| CN108933501A (en) * | 2017-05-24 | 2018-12-04 | 明程电机技术（深圳）有限公司 | outer rotor radiating motor |
-
2011
- 2011-05-25 CN CN2011201690453U patent/CN202059304U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108933501A (en) * | 2017-05-24 | 2018-12-04 | 明程电机技术（深圳）有限公司 | outer rotor radiating motor |
| CN107154707A (en) * | 2017-07-06 | 2017-09-12 | 明程电机技术（深圳）有限公司 | Air convection type heat radiation motor |
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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: 20111130 Termination date: 20150525 |
|
| EXPY | Termination of patent right or utility model |