CN203158187U - Suspended internal gear structure for reducing noise of high-speed motor of electric bicycle - Google Patents
Suspended internal gear structure for reducing noise of high-speed motor of electric bicycle Download PDFInfo
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- CN203158187U CN203158187U CN 201320184759 CN201320184759U CN203158187U CN 203158187 U CN203158187 U CN 203158187U CN 201320184759 CN201320184759 CN 201320184759 CN 201320184759 U CN201320184759 U CN 201320184759U CN 203158187 U CN203158187 U CN 203158187U
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- speed electric
- electrical bicycle
- expreess locomotive
- electric expreess
- gear
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Abstract
The utility model discloses a suspended internal gear structure for reducing noise of a high-speed motor of an electric bicycle. A sun gear, a planet carrier and an internal gear are meshed to form a planet gear secondary speed reducing mechanism, and a sun gear shaft is coupled with a main shaft of the high-speed motor. The internal gear is coupled with a shell, provided with a spoke flange, of the high-speed motor. The suspended internal gear structure is characterized in that the internal gear is coupled with the high-speed motor shell in an elastic manner; a coupling plate on one end of the motor shell is provided with bosses provided with a plurality of transmitting torques, and an elastomer is mounted on each boss; the elastomer is composed of a matching hole and elastomer winged edges; the matching hole is sleeved on the boss; the internal gear is provided with a plurality of mounting holes for the transmitting torque correspondingly, each mounting hole is provided with one elastomer in a matching manner, and the internal gear is fixedly connected with the spoke flange of the high-speed motor of the electric bicycle; and the suspended internal gear structure is formed accordingly. By the aid of the suspended internal gear structure, noise can be reduced obviously by 20 decibel almost, level of gear processing accuracy can be reduced, impact force during transmission can be absorbed, shock waves are cushioned, and effect of reducing cost is further achieved.
Description
Technical field
The utility model relates to a kind of planetary gear mechanism, is specifically related to a kind of low noise speed reduction gearing for the Electrical Bicycle high-speed electric expreess locomotive.
Background technology
On most of Electrical Bicycle of the prior art, mostly be to adopt one-level to slow down or anodontia slow speed motor, compare with high-speed electric expreess locomotive that be characterized in that the volume of motor is bigger under the same torque of output, weight is also very heavy, but inner structure is simple relatively.Because rotating speed is slower, the rotational noise of motor is also less, in addition, the shortcoming of the technical scheme of this motor configuration also clearly: very heavy car body and be difficult for manpower and ride is a kind of very big deficiency.
People expect to have a kind of lighter more power saving for this reason, Electrical Bicycle is used as new walking-replacing tool easily, so volume is littler, and weight is lighter, and more energy-conservation high-speed electric expreess locomotive just arises at the historic moment.
The rotor of the high speed low torque of high-speed electric expreess locomotive will change into rotor inertia the not level of low speed and large torque, then needs the above deceleration of secondary, just can reach this purpose.Prior art generally is to adopt the planetary gear mechanism mode.Yet the high-speed electric expreess locomotive of volume compact in test its rotational noise that produces is very big, reach many decibels of 85-90, gear when major cause is double reduction is more, particularly the level internally toothed annulus is not to be attached on the outer casing member by certain connection, even very accurate processing also is difficult to keep the bearing fulcrum with other parts accurately concentric, part the more, the Mismachining tolerance of accumulation is bigger, just unavoidable generation of beat when gear ring turns round like this, bump when adding the metal gear engagement, all noises then can be coupled to very thin motor housing by the connection of series, acoustics through cavity amplifies propagation towards periphery, further enlarged the sound level of noise, accuracy of manufacture and installation are poorer, and noise is just more big.The noise of high-decibel has influenced the application of lightweight battery-driven car energy-saving electric machine.
In the prior art, the Shang Weiyou scheme that can better overcome the above problems.
Summary of the invention
The purpose of this utility model provides a kind of low noise transmission device for the Electrical Bicycle high-speed electric expreess locomotive, by this transmission device of the present utility model, can reduce about 20 decibels of noises significantly, also can alleviate the impact to electric current.Simultaneously the utility model can also reduce the grade of this transmission device middle gear working accuracy, absorbs the impulsive force in the transmission, the shock absorbing ripple, and then reach the effect of cost-cutting.With elastic body suspension gear, the separating vibration ripple conducts to housing by connecting device, and absorbs the energy of vibration.Simultaneously, the utility model can remedy the deviation of the geometric centre in metalworking and the installation, and the compensation gear ring is because of the form and position tolerance in heat treatment deformation and the course of processing.
The technical scheme of finishing the foregoing invention task is: a kind of suspension inner gear structure that reduces Electrical Bicycle high-speed electric expreess locomotive noise, this structure is intermeshed by sun wheel, pinion carrier and inner gear (internally toothed annulus) and is formed the planetary wheel two reduction gear, the spindle coupled of sun wheel shaft wherein and Electrical Bicycle high-speed electric expreess locomotive; The shell coupling of inner gear wherein and Electrical Bicycle high-speed electric expreess locomotive band width of cloth bar flange, it is characterized in that, the coupling of described inner gear and Electrical Bicycle high-speed electric expreess locomotive shell adopts the elasticity coupling, this elasticity coupled structure is as follows: respectively be provided with several (for example three groups on the coupling disc of Electrical Bicycle high-speed electric expreess locomotive shell one end, every group three) transmit the convex of moment of torsion, transmit on the convex of moment of torsion at each, an elastic body (also being called buffering compensation body or elastic shock attenuation dampening bracket) respectively is installed; Described elastic body is made of mating holes (or being called knock hole) and elastic body wing limit; Described elastomeric mating holes is sleeved on the convex of described transmission moment of torsion; On the inner gear of described planetary wheel two reduction gear, be provided with the mounting hole that several transmit moment of torsion accordingly, each mounting hole that transmits moment of torsion cooperates installation with an elastic body respectively, is fixedly connected with band width of cloth bar flange on the Electrical Bicycle high-speed electric expreess locomotive shell; More than device constitutes the suspension inner gear structure.
Described " each mounting hole on the inner gear cooperates installation with an elastic body respectively " refers to: elastomer sleeve is contained in the mounting hole on the inner gear, and utilizes elastic body wing limit to make this installation more reliable.
The further improvement of above technical scheme has following prioritization scheme:
1, every interval 120 degree are provided with a breach (a wholecircle Zhou Gongsan breach) on Electrical Bicycle high-speed electric expreess locomotive shell, in order to the pinion carrier of described planetary wheel two reduction gear to be installed.
Described several transmit the convex of moment of torsion, can be separately positioned on (for example three groups, three every group) between these three breach.
Further optimize, these three breach adopt the breach of arc.
2, the planetary wheel of planetary wheel two reduction gear, adopt coaxial synchronous dual gear structure: same take turns vary in size, material difference, phase place are identical two gears, other variable gears that corresponding interlock is different.
3, the sun wheel of described planetary wheel two reduction gear, planetary wheel and inner gear, all adopt the suit multilayer structure: each gear body is by the steel manufacturing, the outside of each gear is set with a noise abatement layer, and the hardness of this noise abatement layer is less than the hardness of gear body steel.That is: the dual gear internal layer of planetary wheel two reduction gear is by the steel manufacturing, and useful low noise non-metallic material gear is overlapped in its outside, and this gear hardness now adopts nylon 66 plastics less than the material of steel.Through overtesting, if all make raw material with nylon 66, though the little miniature gears insufficient strength of noise, if adopt steel structure, noise exceeds standard again greatly.Overlap nylon gear on the steel gear so the utility model has adopted, in conjunction with the method for gear ring suspension transmission, solved intensity and noise problem preferably.
4, described elastic body is made of high temperature resistant low temperature resistant elastomeric material again.The utility model is recommended: described resistant to elevated temperatures elastomeric material is to adopt silastic material.
5, also be provided with the aperture that absorbs the lateral deformation amount on the described elastic body.
6, on the described internally toothed annulus, in addition with O type damped ring, can turn round reposefully to ensure gear ring and housing.
7, on the described elastic body, be provided with the lateral deformation part in a side of mating holes.The aperture of described absorption lateral deformation amount can be arranged on this lateral deformation part.
The utility model is to put into practice the scheme that obtains through test many times, and its principle of design is:
With elastic body suspension gear, but the separating vibration ripple conduct to housing by connecting device, and absorb the energy of vibration.
1. control two self oscillation frequencys that passes through part mutually by elastic body, play shock damping action.
2. connect the deviation that remedies the geometric centre in metalworking and the installation for being rigidly connected with elasticity, the compensation gear ring is because of the form and position tolerance in heat treatment deformation and the course of processing.
3. passed through elastic body and transmitted torque power, can absorb the impulsive force in the transmission, the shock absorbing ripple except reducing noise, also can alleviate the rush of current to battery.
By this device, about 20 decibels of noises can be directly reduced, and the working accuracy grade of gear can be reduced, obtain effect preferably with lower Gear Processing cost.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the elastomer structure scheme drawing in the utility model;
Fig. 3, Fig. 4 are suspension inner gear structure scheme drawing (elastomer sleeve is contained in structural representation on the convex that transmits moment of torsion).
The specific embodiment
Embodiment 1, is used for the low noise transmission device of Electrical Bicycle high-speed electric expreess locomotive.With reference to Fig. 1, Fig. 2, Fig. 3: transmission device is intermeshed by sun wheel, pinion carrier and inner gear and forms the planetary wheel two reduction gear, sun wheel shaft wherein and the coupling of Electrical Bicycle high-speed electric expreess locomotive; Inner gear 6 adopts the elasticity coupling with the coupling of Electrical Bicycle high-speed electric expreess locomotive shell 4, this elasticity coupled structure is as follows:: be provided with the convex 3 that transmits moment of torsion at Electrical Bicycle high-speed electric expreess locomotive shell 4, transmit on the convex of moment of torsion at each, an elastic body 5(respectively is installed also is called buffering compensation body or elastic shock attenuation dampening bracket); Described elastic body 5 is made of mating holes 5-1 and elastic body wing limit 5-3; Described elastomeric mating holes 5-1 is sleeved on (simultaneously with reference to Fig. 4) on the convex 3 of described transmission moment of torsion.Also be provided with deflection sucking 5-4 on the elastic body.On the inner gear of described planetary wheel two reduction gear, be provided with the mounting hole of three groups of each several transmission moments of torsion, each mounting hole that transmits moment of torsion cooperates installation with an elastic body 5 respectively, finishes being fixedly connected of planetary wheel two reduction gear and Electrical Bicycle axletree flange; More than device constitutes the suspension inner gear structure.On Electrical Bicycle high-speed electric expreess locomotive shell 4, be provided with three arc notch 2 by interval 120 degree, in order to the pinion carrier of described planetary wheel two reduction gear to be installed.1 is spoke flange on the Electrical Bicycle wheel shaft among the figure.
The planetary wheel of planetary wheel two reduction gear, adopt coaxial synchronous dual gear structure: same take turns vary in size, material difference, phase place are identical two gears, other variable gears that corresponding interlock is different.The dual gear internal layer of planetary wheel two reduction gear is by the steel manufacturing, and useful low noise non-metallic material gear is overlapped in its outside, and this gear hardness now adopts nylon 66 plastics less than the material of steel.Through overtesting, if all make raw material with nylon 66, though the little miniature gears insufficient strength of noise, if adopt steel structure, noise exceeds standard again greatly.Overlap nylon gear on the steel gear so the utility model has adopted, in conjunction with the method for gear ring suspension transmission, solved intensity and noise problem preferably.Elastic body 5 is by resistant to elevated temperatures elastomeric material--silastic material.On the internally toothed annulus 6, in addition with O type damped ring 7, can throw off reposefully to ensure gear ring and housing.
Claims (8)
1. suspension inner gear structure that reduces Electrical Bicycle high-speed electric expreess locomotive noise, this structure is intermeshed by sun wheel, pinion carrier and inner gear and is formed the planetary wheel two reduction gear, the spindle coupled of sun wheel shaft wherein and Electrical Bicycle high-speed electric expreess locomotive; The shell coupling of inner gear wherein and Electrical Bicycle high-speed electric expreess locomotive band width of cloth bar flange, it is characterized in that, the coupling of described inner gear and Electrical Bicycle high-speed electric expreess locomotive shell adopts the elasticity coupling, this elasticity coupled structure is as follows: respectively be provided with the convex that several transmit moment of torsion on the coupling disc of Electrical Bicycle high-speed electric expreess locomotive shell one end, transmit on the convex of moment of torsion at each, an elastic body respectively is installed; Described elastic body is made of mating holes and elastic body wing limit; Described elastomeric mating holes is sleeved on the convex of described transmission moment of torsion; On the inner gear of described planetary wheel two reduction gear, be provided with the mounting hole that several transmit moment of torsion accordingly, each mounting hole that transmits moment of torsion cooperates installation with an elastic body respectively, is fixedly connected with band width of cloth bar flange on the Electrical Bicycle high-speed electric expreess locomotive shell; More than device constitutes the suspension inner gear structure.
2. the suspension inner gear structure of minimizing Electrical Bicycle high-speed electric expreess locomotive noise according to claim 1, it is characterized in that, every interval 120 degree are provided with a breach on described Electrical Bicycle high-speed electric expreess locomotive shell, in order to the pinion carrier of described planetary wheel two reduction gear to be installed.
3. the suspension inner gear structure of minimizing Electrical Bicycle high-speed electric expreess locomotive noise according to claim 2 is characterized in that, the above three breach of Electrical Bicycle high-speed electric expreess locomotive shell adopt the breach of arcs.
4. the suspension inner gear structure of minimizing Electrical Bicycle high-speed electric expreess locomotive noise according to claim 1, it is characterized in that, the planetary wheel of described planetary wheel two reduction gear, adopt the coaxial bidentate wheel construction of position in the same way: same take turns vary in size, the material difference, to the position identical two gears, other variable gears that corresponding interlock is different.
5. the suspension inner gear structure of minimizing Electrical Bicycle high-speed electric expreess locomotive noise according to claim 1, it is characterized in that, the sun wheel of described planetary wheel two reduction gear, planetary wheel and inner gear, all adopt the suit multilayer structure: each gear body is by the steel manufacturing, the outside of each gear is set with a noise abatement layer, and the hardness of this noise abatement layer is less than the hardness of gear body steel.
6. the suspension inner gear structure of minimizing Electrical Bicycle high-speed electric expreess locomotive noise according to claim 5 is characterized in that, also is provided with the aperture that absorbs the lateral deformation amount on the described elastic body.
7. the suspension inner gear structure of minimizing Electrical Bicycle high-speed electric expreess locomotive noise according to claim 1 is characterized in that, on the described elastic body, is provided with the lateral deformation part in a side of mating holes; The aperture of described absorption lateral deformation amount is arranged on this lateral deformation part.
8. according to the suspension inner gear structure of the described minimizing Electrical Bicycle of one of claim 1-7 high-speed electric expreess locomotive noise, it is characterized in that, on the described internally toothed annulus, with the O type damped ring that ensures that gear ring and housing turn round reposefully.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320184759 CN203158187U (en) | 2013-04-12 | 2013-04-12 | Suspended internal gear structure for reducing noise of high-speed motor of electric bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320184759 CN203158187U (en) | 2013-04-12 | 2013-04-12 | Suspended internal gear structure for reducing noise of high-speed motor of electric bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203158187U true CN203158187U (en) | 2013-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320184759 Withdrawn - After Issue CN203158187U (en) | 2013-04-12 | 2013-04-12 | Suspended internal gear structure for reducing noise of high-speed motor of electric bicycle |
Country Status (1)
| Country | Link |
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| CN (1) | CN203158187U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192941A (en) * | 2013-04-12 | 2013-07-10 | 江苏飞马动力科技有限公司 | Suspension internal gear structure for reducing noise of high-speed motor of electric bicycle |
| CN106741552A (en) * | 2016-12-23 | 2017-05-31 | 鼎镁（昆山）新材料科技有限公司 | The different material combining structure improvement of fluted disc used for vehicle |
-
2013
- 2013-04-12 CN CN 201320184759 patent/CN203158187U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192941A (en) * | 2013-04-12 | 2013-07-10 | 江苏飞马动力科技有限公司 | Suspension internal gear structure for reducing noise of high-speed motor of electric bicycle |
| CN103192941B (en) * | 2013-04-12 | 2015-04-08 | 江苏飞马动力科技有限公司 | Suspension internal gear structure for reducing noise of high-speed motor of electric bicycle |
| CN106741552A (en) * | 2016-12-23 | 2017-05-31 | 鼎镁（昆山）新材料科技有限公司 | The different material combining structure improvement of fluted disc used for vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130828 Effective date of abandoning: 20150408 |
|
| RGAV | Abandon patent right to avoid regrant |