CN2702519Y - Hub motor for electric bicycle - Google Patents
Hub motor for electric bicycle Download PDFInfo
- Publication number
- CN2702519Y CN2702519Y CN 200420022433 CN200420022433U CN2702519Y CN 2702519 Y CN2702519 Y CN 2702519Y CN 200420022433 CN200420022433 CN 200420022433 CN 200420022433 U CN200420022433 U CN 200420022433U CN 2702519 Y CN2702519 Y CN 2702519Y
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- gear
- electric bicycle
- armature
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Abstract
The utility model provides a hub electric motor for an electric bicycle, comprising a plurality of duplex planet wheels formed by a coaxial gear wheel and a coaxial pinion. The gear wheel of each duplex planet wheel is engaged with a sun gear, and the external tooth of the pinion is engaged with the internal tooth of the annular gear. The coaxial big and small duplex planet wheels are adopted in the utility model, under the same speed of the wheel of the electric bicycle, the volume of the whole electric motor is reduced, compared with that of the present electric motor, and the rate of the reduced volume is 30% of the volume of the present electric motor; besides, the weight loss of the electric motor can reach 25% of that of the present electric motor, the cost is decreased, and the transmission efficiency is improved.
Description
Technical field
The utility model relates to a kind of motor, particularly relates to the gear reduction DC wheel hub motor of a kind of electric bicycle with drive wheels.
Background technology
The motor of existing driving electric bicycle wheel comprises not to be with mechanical reduction gear and to have the primary gear speed reducing device.Not with mechanical reduction gear, the about 6-7 kilogram of its weight, moment is less than normal when heavy duty or starting, causes electric bicycle can not carry heavy load, the difficulty of going up a slope.It is gear-driven to have one-level, though carrying heavy load or bigger moment is arranged when going up a slope,, because its complex structure, volume are bigger than normal, cost is also high, and noise is big, makes troubles to use.After all, the motor of driving electric bicycle wheel needs compact conformation especially.
The utility model content
Technical problem to be solved in the utility model provides a kind of carrying heavy load or the big and compact conformation of moment, little, the lower-cost wheel hub of electric bicycle motor of volume when going up a slope.
In order to solve the problems of the technologies described above, the utility model provides a kind of wheel hub of electric bicycle motor, and it comprises:
One with the cycle hub housing that is fixedly linked,
One one-piece rotor shaft;
One ring gear that comprises internal gear that fixes with main shaft,
One is arranged on the armature in the described wheel hub, and it links to each other with the DC power supply of electric bicycle;
One central gear that links to each other with above-mentioned armature and drive by above-mentioned armature, this gear can rotate around described main shaft;
A plurality of each compound planet gear gear wheel and above-mentioned central gear mesh by being positioned at the compound planet gear that coaxial large and small gear is formed, and the external tooth of its pinion is meshed with the internal tooth of described ring gear;
One clutch, its outer group links with the connecting axle of above-mentioned compound planet gear, and group links to each other with above-mentioned housing in it.
Further, the armature of the wheel hub of electric bicycle motor that the utility model provides links to each other with main shaft by a bearing, and described armature is provided with an inner chamber body, and this bearing is arranged in the described inner chamber body.
The wheel hub of electric bicycle motor that the utility model provides, owing to adopt coaxial large and small compound planet gear, make and reaching under the situation of same wheel velocity, the existing motor of the volume ratio of whole motor reduces greatly, usually reach 30%, weight saving can reach 25%, reduced cost, transmission efficiency has also improved.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the present utility model.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.
Referring to Fig. 1, wheel hub of electric bicycle motor of the present utility model comprises one-piece rotor shaft 1, housing 2, armature 3, ring gear 4, compound planet gear 5, central gear 6, clutch 7, centre bearing 8 and support 9.Housing 2 is made up of wheel hub 22, right end cap 21 and the left end cap 23 of electric bicycle.Wheel hub 22 and right end cap 21 and left end cap 23 link to each other by screw.Right end cap 21 links to each other with main shaft 1 by bearing 11 with left end cap 23, thereby can be around main shaft 1 rotation.Armature 3 is fixedly linked with support 9, and an end face of end face of support 9 and central gear 6 is fixedly linked by screw 25 simultaneously.Like this, armature 3 connects into an integral body with support 9 and central gear 6.Support 9 is formed with an inner chamber body A, a pair of centre bearing 8 is placed in the above-mentioned inner chamber body A, after the end face of center gear 6 end face by screw 25 and support 9 is fixedly linked, above-mentioned inner chamber body A is by complete closed, so, the sound that bearing 8 sends can not spread out of, thereby can significantly reduce the noise that bearing 18 sends.Bearing 8 is by axle sleeve 13 axial location.
Embodiment of the present utility model comprises 3 compound planet gears.Each compound planet gear 5 is made up of pinion 51 and gear wheel 52, and pinion 51 and gear wheel 52 are connected as a single entity, and is positioned at same connecting axle 16.Embodiment of the present utility model comprises 3 compound planet gears.The external tooth of gear wheel 52 is meshed with the external tooth of central gear 6, and the external tooth of pinion 51 is meshed with the internal tooth of ring gear 4, and ring gear 4 is fixedly linked with main shaft 1 by a fixed mount 26.Pinion 51 and gear wheel 52 rotate around connecting axle 16 by pair of bearings 19.Simultaneously, connecting axle 16 can be connected with interior group of clutch 7, and outer group of clutch 7 is fixedly linked with right end cap 21, and interior group of clutch 7 during with outer group interlock, clutch 7 rotates around main shaft.Clutch 7 is to link to each other with main shaft 1 by a bearing 12, so clutch 7 can rotate around main shaft 1.Because clutch 7 is fixedly linked with right end cap 21, so clutch 7 can drive housing 2 and rotate, thereby the wheel hub 22 that drives electric bicycle rotates.Bearing 8, bearing 12, bearing 11 by axle sleeve 10, axle sleeve 13, axle sleeve 14, axle sleeve 28 at axial restraint.
When armature 3 energisings, it drives support 9 and central gear 6 rotates around main shaft 1 by bearing 8, so, the pinion 51 of compound planet gear 5 and gear wheel 52 rotate around connecting axle 16, simultaneously, connecting axle 16 rotates along the internal tooth of ring gear 4, and like this, the clutch 7 that links to each other with the connecting axle 16 of the internal tooth of ring gear 4 drives wheel hub 22 rotations of electric bicycles.
Above-mentioned central gear 6, compound planet gear 5 and ring gear 4 formation mobilities are 1 train transmission, the ratio product that its speed ratio equals the secondary gear number of teeth adds 1, whole speed ratio can be controlled between the 5-20, guarantee at motor when wheel hub 22 rotates with common speed, motor can have higher speed to rotate, thereby the volume of armature 3 is significantly reduced.
Certainly,, do not spend performing creative labour, on the basis of the foregoing description, can do multiple variation, can realize the purpose of this utility model equally for one of ordinary skill in the art.But this variation obviously should be in the protection range of claims of the present utility model.
Claims (4)
1, a kind of wheel hub of electric bicycle motor, it comprises:
One with the cycle hub housing that is fixedly linked,
One one-piece rotor shaft;
One ring gear that comprises internal gear that fixes with main shaft,
One is arranged on the armature in the described wheel hub, and it links to each other with the DC power supply of electric bicycle;
One central gear that links to each other with above-mentioned armature and drive by above-mentioned armature, this gear can rotate around described main shaft;
It is characterized in that it also comprises:
A plurality of each compound planet gear gear wheel and above-mentioned central gear mesh by being positioned at the compound planet gear that coaxial large and small gear is formed, and the external tooth of its pinion is meshed with the internal tooth of described ring gear; And
One clutch, its outer group links with the connecting axle of above-mentioned compound planet gear, and group links to each other with above-mentioned housing in it.
2, wheel hub of electric bicycle motor as claimed in claim 1 is characterized in that, described armature links to each other with main shaft by a bearing, and described armature is provided with an inner chamber body, and this bearing is arranged in the described inner chamber body.
3, wheel hub of electric bicycle motor as claimed in claim 2, it is characterized in that, described armature links to each other with central gear by a support, described central gear is provided with end face, described support is formed with an inner chamber body, and has an end face, described bearing to be placed in the above-mentioned inner chamber body, after an end face of the end face of described central gear and described support was fixedly linked, above-mentioned inner chamber body was by complete closed.
4, wheel hub of electric bicycle motor as claimed in claim 1 is characterized in that, it comprises 3 compound planet gears.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420022433 CN2702519Y (en) | 2004-04-30 | 2004-04-30 | Hub motor for electric bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420022433 CN2702519Y (en) | 2004-04-30 | 2004-04-30 | Hub motor for electric bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2702519Y true CN2702519Y (en) | 2005-05-25 |
Family
ID=34770374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420022433 Expired - Fee Related CN2702519Y (en) | 2004-04-30 | 2004-04-30 | Hub motor for electric bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2702519Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346990C (en) * | 2005-12-16 | 2007-11-07 | 清华大学 | Coaxial split type motor wheel hub |
| CN103271801A (en) * | 2013-04-02 | 2013-09-04 | 太仓市邦爱家具有限公司 | Hub structure provided with reduction box |
| CN106828076A (en) * | 2017-03-31 | 2017-06-13 | 重庆大学 | Electric wheel hub with wheel-side reduction device |
| WO2019114592A1 (en) * | 2017-12-13 | 2019-06-20 | 天津迪思科博科技发展有限公司 | Through-shaft miniature hub motor for electric bicycle |
-
2004
- 2004-04-30 CN CN 200420022433 patent/CN2702519Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346990C (en) * | 2005-12-16 | 2007-11-07 | 清华大学 | Coaxial split type motor wheel hub |
| CN103271801A (en) * | 2013-04-02 | 2013-09-04 | 太仓市邦爱家具有限公司 | Hub structure provided with reduction box |
| CN106828076A (en) * | 2017-03-31 | 2017-06-13 | 重庆大学 | Electric wheel hub with wheel-side reduction device |
| WO2019114592A1 (en) * | 2017-12-13 | 2019-06-20 | 天津迪思科博科技发展有限公司 | Through-shaft miniature hub motor for electric bicycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |