CN201226487Y - Miniature motor for electric bicycle - Google Patents
Miniature motor for electric bicycle Download PDFInfo
- Publication number
- CN201226487Y CN201226487Y CNU2008201159585U CN200820115958U CN201226487Y CN 201226487 Y CN201226487 Y CN 201226487Y CN U2008201159585 U CNU2008201159585 U CN U2008201159585U CN 200820115958 U CN200820115958 U CN 200820115958U CN 201226487 Y CN201226487 Y CN 201226487Y
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- CN
- China
- Prior art keywords
- gear
- motor
- electric bicycle
- rotor
- micro motor
- 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 - Lifetime
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- 229920001971 elastomer Polymers 0.000 claims description 5
- 239000000806 elastomer Substances 0.000 claims description 5
- 238000004804 winding Methods 0.000 abstract description 7
- 230000003139 buffering effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model discloses an electric bicycle micro motor mainly comprises brushless micro motor of direct current, sun gear, ring gear, the one-way planet carrier and the whole axle that are equipped with the roller gear that gradually bursts at seams, and brushless micro motor of direct current is the internal stator external rotor structure, and its rotor is connected with sun gear, and the roller gear that gradually bursts at seams meshes with sun gear and ring gear to one-way planet carrier is for supporting that the drive motor is rotatory around the whole axle. The motor has the advantages that the motor is wound in a motor winding mode, the sun gear is connected with the rotor, the end cover and the inner gear ring are connected with the hub, the planetary gear buffering mode, the gear profile and the like are improved, so that the motor is larger in torque, smaller in size, firmer and more reliable in connection, smaller in sound and longer in service life when the motor rotates at a low speed.
Description
Technical field
The utility model relates to electro-motor, exactly is the electric bicycle micro motor.
Background technology
Nowadays electric bicycle has entered huge numbers of families as bicycle, has become the popular important vehicles.But also there are shortcomings such as torque is little, volume is big, noise is big, the life-span is short, connection is unreliable in the core component motor of electric bicycle.
The driver of existing band decelerator generally adopts internal rotor external stator electric machine structure, and motor torque is less, can not satisfy motor speed when low torque want big demand; Even adopt internal stator external rotor electric machine structure, its coiling mode is also more backward, and central gear is connected with rotor and end cap, ring gear are connected with wheel hub and all use traditional screw fastening, the gear contact also is hard connection, so the structure more complicated, it is reliably poor to connect, and volume, noise are also bigger.
The utility model content
Deficiency at the prior art existence, the utility model aims to provide a kind of electric bicycle micro motor, this motor is to winding mode, central gear is connected with rotor, and end cap, ring gear are connected with wheel hub and planetary gear buffering method, the form of gear tooth etc. are improved, and torque is bigger when making its slow-speed of revolution, volume is little, connect more solid and reliablely, sound is littler, and the life-span is longer.
The technical solution adopted in the utility model is:
A kind of electric bicycle micro motor, mainly form by DC brushless miniature motor, central gear, ring gear, unidirectional planet carrier and bearing that involute cylindrical gear is housed, described DC brushless miniature motor is the internal stator outer-rotor structure, its rotor is connected with central gear, involute cylindrical gear and central gear and ring gear engagement are that the supporting drive motor rotates around bearing with unidirectional planet carrier.
Described DC brushless miniature motor is 18 grooves, 3 phases, 10 pairs, 20 utmost points, first from the 1st groove 13 grooves only, second from the 4th groove 16 grooves only, third phase ends from the 7th groove 1 groove, the three-phase connected mode is identical, every branch road 6 teeth, the Hall of three Hall elements is literal all outwardly, 120 ° at phase angle.
Described central gear is pressed into the rotor of DC brushless miniature motor with the profile of tooth spline.
The end cap of described motor, ring gear are threaded with body with wheel hub.
The profile of tooth reference circle of described central gear, ring gear, involute cylindrical gear is repaiied drum, tooth top cavetto.
Be provided with the noise abatement elastomer between described involute cylindrical gear and its gear shaft.
Advantage of the present utility model is as follows:
1. the utility model adopts the internal stator external rotor electric machine structure of special winding mode, improved the efficient of motor, and having satisfied under the middling speed condition has bigger torque, guarantees the electric bicycle driver must reach under the less condition of speed reducing ratio output torque (power) and certain range of speeds;
2. the utility model adopts special central gear and rotor, the connected mode of end cap, ring gear and wheel hub has been cancelled the screw fastening means, makes the micromachine volume littler, connector is more solid and reliable, has been equipped with suitable driver for making medium-to-high grade light-weight electric bicycle;
3. the utility model adopts special planetary gear noise reduction sound elastomer and special tooth profile, has further lowered noise, has satisfied the harsh requirement of domestic and international high-grade electric bicycle to noise.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is that magnetic pole of the present utility model, groove are counted schematic diagram;
Fig. 3 is a winding mode schematic diagram of the present utility model;
Fig. 4 is the syndeton schematic diagram of central gear and rotor;
Fig. 5 is the syndeton schematic diagram of end cap, ring gear and wheel hub;
Fig. 6 is the tooth-formation of gear schematic diagram;
Fig. 7 is the elastomeric scheme of installation of noise abatement.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Description of reference numerals is as follows:
1---DC brushless miniature motor 2---central gear
3---ring gear 4---involute cylindrical gear
5---unidirectional planet carrier 6---bearing
7---rotor 8---end cap
9---wheel hub 10---gear compound graduation circle
11---gear teeth tips 12---gear shaft
13---the noise abatement elastomer
As shown in Figure 1, this electric bicycle micro motor mainly is made up of DC brushless miniature motor 1, central gear 2, ring gear 3, the unidirectional planet carrier 5 that involute cylindrical gear 4 is housed and bearing 6, DC brushless miniature motor 1 is the internal stator outer-rotor structure, its rotor 7 is connected with central gear 2, involute cylindrical gear 4 often meshes with central gear 2 and ring gear 3, with unidirectional planet carrier 5 is that the supporting drive motor rotates around bearing 6, and motor drives the wheel running by spoke.
Shown in Fig. 2,3, the DC brushless miniature motor has adopted special magnetic pole, the design of groove number and special winding mode, and having satisfied under the middling speed condition has bigger torque, has dwindled volume, and very high copper factor is arranged.
1) magnetic pole, groove number: design DC brushless miniature rotating speed of motor n, number of phases m, level logarithm p count q with the groove that every mutually every number of pole-pairs needs, and total groove is counted z application of formula z=2pmq and asked calculation.This DC brushless miniature motor is 18 grooves, 3 phases, 10 pairs, 20 utmost points (q=0.3 in the formula).
2) winding mode: A ends from the 1st groove 13 grooves, several 5 grooves of cross-line, B ends from the 4th groove 16 grooves, and C ends from the 7th groove 1 groove, connected mode is with the A phase, winding is the star-like connection of three-phase, and X, Y, Z connect together, A, B, C output, every branch road 6 teeth, Hall element is pressed shown position and is placed, and three Halls are literal all outwardly, 120 ° at phase angle.
As shown in Figure 4, central gear 2 usefulness profile of tooth splines are pressed into the rotor 7 of DC brushless miniature motor, connect without screw, and are benchmark processing rotor 7 with central gear 2, have guaranteed precision and the reliability that is connected.
As shown in Figure 5, the end cap 8 of motor, ring gear 3 are threaded with wheel hub 9 usefulness bodies, connect without screw, have increased the reliability that connects, and have dwindled volume.
As shown in Figure 6, the profile of tooth reference circle 10 of central gear, ring gear, involute cylindrical gear is repaiied drum, tooth top 11 cavettos, has changed original standard tooth form, makes gear meshing more slick and sly, and noise significantly reduces.
As shown in Figure 7, be provided with noise abatement elastomer 13 between involute cylindrical gear 4 and its gear shaft 12, the bus depth of parallelism between several groups of gears is improved, reduced gearing noise.
The utility model is not limited to above-mentioned preferred forms, and anyone can draw other various forms of products under enlightenment of the present invention.Though but on its shape or structure, do any variation, every identical with the utility model or akin technical scheme is all within its protection range.
Claims (6)
1, a kind of electric bicycle micro motor, it is characterized in that, mainly form by DC brushless miniature motor, central gear, ring gear, unidirectional planet carrier and bearing that involute cylindrical gear is housed, described DC brushless miniature motor is the internal stator outer-rotor structure, its rotor is connected with central gear, involute cylindrical gear and central gear and ring gear engagement are that the supporting drive motor rotates around bearing with unidirectional planet carrier.
2, electric bicycle micro motor according to claim 1, it is characterized in that, described DC brushless miniature motor is 18 grooves, 3 phases, 10 pairs, 20 utmost points, first from the 1st groove 13 grooves only, and second from the 4th groove 16 grooves only, and third phase ends from the 7th groove 1 groove, the three-phase connected mode is identical, every branch road 6 teeth, the Hall of three Hall elements is literal all outwardly, 120 ° at phase angle.
3, electric bicycle micro motor according to claim 1 is characterized in that, described central gear is pressed into the rotor of DC brushless miniature motor with the profile of tooth spline.
4, electric bicycle micro motor according to claim 1 is characterized in that, the end cap of described motor, ring gear are threaded with body with wheel hub.
5, electric bicycle micro motor according to claim 1 is characterized in that, the profile of tooth reference circle of described central gear, ring gear, involute cylindrical gear is repaiied drum, tooth top cavetto.
6, electric bicycle micro motor according to claim 1 is characterized in that, is provided with the noise abatement elastomer between described involute cylindrical gear and its gear shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201159585U CN201226487Y (en) | 2008-06-18 | 2008-06-18 | Miniature motor for electric bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201159585U CN201226487Y (en) | 2008-06-18 | 2008-06-18 | Miniature motor for electric bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201226487Y true CN201226487Y (en) | 2009-04-22 |
Family
ID=40599390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201159585U Expired - Lifetime CN201226487Y (en) | 2008-06-18 | 2008-06-18 | Miniature motor for electric bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201226487Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103036354A (en) * | 2012-11-23 | 2013-04-10 | 朱幕松 | Ultra-thin multi-drive brushless hub motor with high speed and high efficiency |
| CN105743245A (en) * | 2016-04-08 | 2016-07-06 | 上海翡叶动力科技有限公司 | Low-speed direct-driven servo permanent-magnet motor stator/rotor |
| CN105763008A (en) * | 2016-05-11 | 2016-07-13 | 朱幕松 | Slender coreless brushless two-pole permanent magnet direct-current motor |
-
2008
- 2008-06-18 CN CNU2008201159585U patent/CN201226487Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103036354A (en) * | 2012-11-23 | 2013-04-10 | 朱幕松 | Ultra-thin multi-drive brushless hub motor with high speed and high efficiency |
| CN103036354B (en) * | 2012-11-23 | 2015-03-11 | 朱幕松 | Ultra-thin multi-drive brushless hub motor with high speed and high efficiency |
| CN105743245A (en) * | 2016-04-08 | 2016-07-06 | 上海翡叶动力科技有限公司 | Low-speed direct-driven servo permanent-magnet motor stator/rotor |
| CN105763008A (en) * | 2016-05-11 | 2016-07-13 | 朱幕松 | Slender coreless brushless two-pole permanent magnet direct-current motor |
| CN105763008B (en) * | 2016-05-11 | 2018-01-30 | 朱幕松 | Slender type iron-core-free is brushless the two poles of the earth permanent magnet DC motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090422 |