CN208174447U - Electric bicycle motor transmission mechanism - Google Patents
Electric bicycle motor transmission mechanism Download PDFInfo
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- CN208174447U CN208174447U CN201820456740.XU CN201820456740U CN208174447U CN 208174447 U CN208174447 U CN 208174447U CN 201820456740 U CN201820456740 U CN 201820456740U CN 208174447 U CN208174447 U CN 208174447U
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Abstract
The utility model discloses a kind of electric bicycle motor transmission mechanisms, including connected electric machine casing and axis shell, it is equipped with motor body in electric machine casing, and gear reduction, clutch and axis are installed in intermediate axle housing body, the output shaft and axis of motor body are arranged in parallel；It is characterized in that the gear reduction includes the first axle tooth being set on output shaft, pivots the transmission shaft for being set in intermediate axle housing body and being parallel to output shaft and arrange, is fixed on transmission shaft and the second axis tooth with the nylon gear of first axle tooth engagement and on transmission shaft, clutch includes clutch outer and clutch inner ring, the clutch gear with the second axis tooth engagement is integrally formed in clutch outer, and clutch inner ring is equipped with the locating rack fixed with axis, and the connection sleeve for stretching out axis shell to fix the chain wheel of electric bicycle is integrally connected on the locating rack.The utility model more compact structure, components are few, easily assemble, and good operation stability, noise are smaller.
Description
Technical field
The utility model relates to a kind of electric bicycle motor transmission mechanisms.
Background technique
Known electric bicycle mostly uses built-in motor transmission mechanism as its main power mechanism, this driver
Structure generally comprise the motor body as power source and the planetary gear speed reducing mechanism as power train, clutch, driving gear set and
Axis and chain wheel etc..
For the considerations of saving radial space in conventional built-in motor transmission mechanism, motor body is usually all in
Axis is coaxially arranged, is the equal of being nested on axis.The output shaft of motor body connects clutch by planetary gear speed reducing mechanism,
It is connected again by ring gear with the shaft gear on axis by clutch.But in fact, due to axis itself size limit, in addition
It occupies motor body and related deceleration mechanism shaft core position, leads in actual implementation this kind of built-in motor radially
Size is growing on and on.And when the operation of this kind of built-in motor, the torsion of each mechanism is concentrated on axis, leads to the torsion on axis
Over-burden for square.
Existing built-in motor transmission mechanism is usually all the structure of parallel expansion, motor body in this structure thus
It is the relationship of parallel arrangement with axis.The output shaft of motor body connects clutch, clutch inner ring by planetary gear speed reducing mechanism
Central axis on clutch gear is set, the gear on chain wheel positioning element being nested on the gear and other side axis engages biography
It is dynamic.Compared to the structure of original coaxial-type, motor body, planetary gear speed reducing mechanism, clutch and gear in such built-in motor are passed
Dynamic is that size setting is all no longer restricted, and is easy to the reduction of size with equilibrium volume, and it is negative to also mitigate the torque on axis
Load.However in actual use, this kind of built-in motor still exposes following defect：
1）Motor body output par, c uses planetary gear speed reducing mechanism, realizes reliability service, planetary gear in the mechanism
It typically at least needs to arrange three, causes components more, assembly is also cumbersome, increases production cost, reduces assembly effect
Rate.In addition the gears at different levels of planetary gear speed reducing mechanism are metal gear, engaged transmission when noise it is larger, cause the fortune of mechanism entirety
Row noise is higher.
2）The connection structure of planetary gear speed reducing mechanism and clutch is complicated, need for planetary gear axis to be arranged it is this kind of from
On the outer ring of clutch, the torque output of planetary gear speed reducing mechanism when not only assembling cumbersome, processing inconvenience, reduction efficiency, and running
Be transferred on clutch by planetary gear axis so that the burden and stress on axis are larger, cause mechanism operating reliability and
Stability declines.
3）It needs to design special chain wheel fixed frame or positioning element to contact clutch and chain wheel, causes mechanism components
More, process and assemble is cumbersome, and production cost increases.
4）The connection structure of planetary gear speed reducing mechanism and clutch increases mechanism axial direction volume, and shell sizes increase, and makes
It remains unchanged at the structure of entire built-in motor not compact enough.
Summary of the invention
The utility model aim is：It provides that a kind of structure is more compact, and components are few, easily assembles, and good operation stability,
The smaller electric bicycle motor transmission mechanism of noise.
The technical solution of the utility model is：A kind of electric bicycle motor transmission mechanism, including connected motor
Shell and axis shell are equipped with motor body in electric machine casing, and be equipped in intermediate axle housing body gear reduction, clutch and
Axis, the output shaft and axis of motor body are arranged in parallel；It is characterized in that the gear reduction includes being set to output shaft
On first axle tooth, pivot be set to intermediate axle housing body in and be parallel to output shaft arrangement transmission shaft, be fixed on transmission shaft and with
The nylon gear of first axle tooth engagement and the second axis tooth on transmission shaft, clutch includes in clutch outer and clutch
It encloses, the clutch gear with the second axis tooth engagement is integrally formed in clutch outer, and clutch inner ring is equipped with solid with axis
Fixed locating rack is integrally connected with the connection sleeve for stretching out axis shell to fix the chain wheel of electric bicycle on the locating rack.
Further, it is fixed with metal inserted piece in the centre bore of nylon gear described in the utility model, the metal inserted piece
It is equipped with the connecting hole fixed with transmission shaft cooperation.
Further, the centre bore of nylon gear described in the utility model and metal inserted piece cooperate solid by keyway
It is fixed, and also cooperate by keyway between the connecting hole and transmission shaft on metal inserted piece and fix.
Further, axis shell described in the utility model encloses fixation by left and right shell and forms, the electric machine casing
Including motor front housing seat and the motor rear cover being fixed thereon, the motor front housing seat is fixed or is integrally designed with left shell.
Further, the both ends of transmission shaft described in the utility model are equipped with by bearing and left and right shell respectively
Pivoting hole be connected.
Further, motor body described in the utility model is external stator inner rotor core, the output shaft and rotor
It is fixed.
The utility model has the advantages that：
1）Gear reduction in the utility model is compared to conventional planetary gear speed reducing mechanism, and components are few, and structure is simple,
Wherein not only contract in motor body output par, c due to directly being engaged with the tooth shaft on motor body output shaft using nylon gear
The radial dimension of Jian Liao mechanism, and component is easy to be opened processing, assembly is also more convenient, can be while improving the production efficiency
Reduce production cost.
2）Gear reduction in the utility model uses nylon gear, the Buddhist nun in the intergrade of its pinion unit
Gearing noise on dens draconis wheel and output shaft between the axis tooth of metal is lower, can mitigate entire transmission significantly to a certain extent
The running noise of mechanism.
3）The utility model is fixed with metal inserted piece in the centre bore of the nylon gear, and by the metal inserted piece with
Transmission shaft is connected, and designs the torque transfer strength that can be improved nylon gear in this way, further ensures that the work of entire mechanism can
By property.
4）Complicated planetary gear speed reducing mechanism simple gear drive is changed in the utility model, while again
The clutch that script is contacted with planetary gear speed reducing mechanism complexity has been done into simplification, the direct geared design for driving clutch operating has been existed
In clutch outer, apply torque by the gear mesh clutch on the outer ring, then be transferred on axis, the firm collection of transmission force
In, there is no the planet axis torque of planetary gear speed reducing mechanism in the prior art over-burden the problem of, substantially increase mechanism entirety
Operating reliability and stability.
5）The chain wheel bracket in routine techniques is eliminated in the utility model, it is integrally designed with clutch inner ring, this
Sample adjustment improves laser intensity while simplifying whole assembling structure, is also beneficial to enhancing mechanism operating reliability and stabilization
Property.
6）Improvement in the utility model for gear reduction and clutch all reduces mechanism overall radial and axis
It to size, is better able to rationally utilize housing interior volume, reduces volume, so that the structure of entire mechanism is more compact, shell
Also molding and assembly easier to process.
Detailed description of the invention
The utility model is further described with reference to the accompanying drawings and embodiments：
Fig. 1 is the cross-sectional view of the structure of the utility model.
Wherein：1, motor body；2, clutch；2a, clutch outer；2b, clutch inner ring；3, axis；4, output shaft；
5, first axle tooth；6, transmission shaft；7, nylon gear；8, the second axis tooth；9, clutch gear；10, locating rack；11, sleeve is connected；
12, chain wheel；13, metal inserted piece；14, left shell；15, right shell body；16, motor rear cover.
Specific embodiment
Embodiment：As shown in Figure 1, being a kind of specific implementation of the utility model electric bicycle motor transmission mechanism
Mode is equipped with motor body 1 with connected electric machine casing and axis shell in electric machine casing, and installs in intermediate axle housing body
There are gear reduction, clutch 2 and axis 3, the output shaft 4 and axis 3 of motor body 1 are arranged in parallel.Institute in the present embodiment
It states axis shell to be formed by the enclosing fixation of left and right shell 14,15, the electric machine casing includes motor front housing seat and is fixed thereon
Left outside shell 14 in motor rear cover 16, the motor front housing seat and the axis shell is integrally designed（Therefore omit mark）, specifically
As shown in Figure 1.The motor body 1 in the present embodiment uses external stator inner rotor core, the output shaft 4 and rotor simultaneously（Figure
In do not mark）It is fixed.
The main improvement of the utility model is gear reduction and clutch.Specifically as shown in connection with fig. 1, the present embodiment
Described in the group of gear reduction become：First axle tooth 5, pivot on output shaft 4 are set in intermediate axle housing body and parallel
It is driven in the transmission shaft 6 arranged of output shaft 4, the nylon gear 7 that is fixed on transmission shaft 6 and engage with first axle tooth 5 and being set to
The second axis tooth 8 on axis 6.Clutch 2 in the present embodiment is freewheel clutch comprising in clutch outer 2a and clutch
2b is enclosed, is integrally formed with the clutch gear 9 engaged with the second axis tooth 8 on clutch outer 2a, and clutch inner ring 2b is equipped with
The fixed locating rack 10 with axis 3 is integrally connected with the chain wheel for stretching out axis shell to fix electric bicycle on the locating rack 10
12 connection sleeve 11.
The both ends of transmission shaft 6 described in the present embodiment are respectively by bearing（It is not marked in figure）On left and right shell 14,15
The pivoting hole being equipped with is connected.
It is fixed with metal inserted piece 13 in the centre bore of the nylon gear 7, which is equipped with matches with transmission shaft 6
Close fixed connecting hole.Specifically the centre bore of nylon gear 7 and metal inserted piece 13 cooperate by keyway and fix, and metal inserted piece
Also cooperate by keyway between connecting hole on 13 and transmission shaft 6 and fixes.Molding is dissipated in the present embodiment outside metal inserted piece 13
There are several equiangularly spaced keys, and the central hole of nylon gear 7 is equipped with the slot cooperated with these keys to fix metal inserted piece
13.Equally, diverging forms several equiangularly spaced keys on transmission shaft 6, and the connection hole on metal inserted piece 13 be equipped with
The slot of these keys cooperation is with fixed conveyor axis 6.The introducing of metal inserted piece 13 can be improved the intensity of 7 torque of nylon gear transmitting,
Enhance the job stability of mechanism.
Certainly the above embodiments are only for explaining the technical ideas and features of the present invention, and its object is to allow be familiar with this
The people of technology can understand the content of the utility model and implement accordingly, and the protection model of the utility model can not be limited with this
It encloses.Any modifications made in accordance with the spirit of the main technical solutions of the utility model should all cover the guarantor in the utility model
Within the scope of shield.
Claims (6)
1. a kind of electric bicycle motor transmission mechanism, including connected electric machine casing and axis shell, in electric machine casing
Equipped with motor body（1）, and gear reduction, clutch are installed in intermediate axle housing body（2）And axis（3）, motor body（1）
Output shaft（4）With axis（3）Parallel arrangement；It is characterized in that the gear reduction includes being set to output shaft（4）On
First axle tooth（5）, pivot be set to intermediate axle housing body in and be parallel to output shaft（4）The transmission shaft of arrangement（6）, be fixed on transmission shaft
（6）It is upper and with first axle tooth（5）The nylon gear of engagement（7）And it is set to transmission shaft（6）On the second axis tooth（8）, clutch（2）
Including clutch outer（2a）With clutch inner ring（2b）, clutch outer（2a）On be integrally formed with and the second axis tooth（8）Engagement
Clutch gear（9）, and clutch inner ring（2b）It is equipped with and axis（3）Fixed locating rack（10）, the locating rack（10）
It is upper to be integrally connected with the chain wheel for stretching out axis shell to fix electric bicycle（12）Connection sleeve（11）.
2. electric bicycle motor transmission mechanism according to claim 1, it is characterised in that the nylon gear（7）
Centre bore in be fixed with metal inserted piece（13）, the metal inserted piece（13）It is equipped with and transmission shaft（6）Cooperate fixed connecting hole.
3. electric bicycle motor transmission mechanism according to claim 2, it is characterised in that the nylon gear（7）
Centre bore and metal inserted piece（13）Cooperate by keyway and fixes, and metal inserted piece（13）On connecting hole and transmission shaft（6）It
Between also by keyway cooperate fix.
4. electric bicycle motor transmission mechanism according to claim 1, it is characterised in that the axis shell by
Left and right shell（14,15）It encloses fixation to form, the electric machine casing includes motor front housing seat and the motor rear cover that is fixed thereon
（16）, the motor front housing seat and left shell（14）Fixed or integrated design.
5. electric bicycle motor transmission mechanism according to claim 4, it is characterised in that the transmission shaft（6）'s
Both ends are respectively by bearing and left and right shell（14,15）The pivoting hole being equipped with is connected.
6. electric bicycle motor transmission mechanism according to claim 1, it is characterised in that the motor body（1）
For external stator inner rotor core, the output shaft（4）It is fixed with rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820456740.XU CN208174447U (en) | 2018-03-30 | 2018-03-30 | Electric bicycle motor transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820456740.XU CN208174447U (en) | 2018-03-30 | 2018-03-30 | Electric bicycle motor transmission mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208174447U true CN208174447U (en) | 2018-11-30 |
Family
ID=64373174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820456740.XU Active CN208174447U (en) | 2018-03-30 | 2018-03-30 | Electric bicycle motor transmission mechanism |
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|---|---|
| CN (1) | CN208174447U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109625146A (en) * | 2019-01-11 | 2019-04-16 | 苏州盛亿电机有限公司 | The compact built-in motor being driven using primary gear speed reducing |
| WO2021129066A1 (en) * | 2019-12-28 | 2021-07-01 | 苏州万佳电器有限公司 | Central drive device and bicycle having said device |
| JP2021176718A (en) * | 2020-05-07 | 2021-11-11 | ヤマハ発動機株式会社 | Driving unit and power-assisted vehicle |
| TWI776439B (en) * | 2021-03-24 | 2022-09-01 | 朝程工業股份有限公司 | Electric vehicle transmission mechanism and electric vehicle |
-
2018
- 2018-03-30 CN CN201820456740.XU patent/CN208174447U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109625146A (en) * | 2019-01-11 | 2019-04-16 | 苏州盛亿电机有限公司 | The compact built-in motor being driven using primary gear speed reducing |
| WO2020143340A1 (en) * | 2019-01-11 | 2020-07-16 | 苏州盛亿电机有限公司 | Compact mid-drive motor using single-stage gear reduction drive |
| CN109625146B (en) * | 2019-01-11 | 2024-03-15 | 苏州盛亿电机有限公司 | Compact central motor adopting primary gear reduction transmission |
| WO2021129066A1 (en) * | 2019-12-28 | 2021-07-01 | 苏州万佳电器有限公司 | Central drive device and bicycle having said device |
| JP2021176718A (en) * | 2020-05-07 | 2021-11-11 | ヤマハ発動機株式会社 | Driving unit and power-assisted vehicle |
| JP7430110B2 (en) | 2020-05-07 | 2024-02-09 | ヤマハ発動機株式会社 | Drive units and electric auxiliary vehicles |
| TWI776439B (en) * | 2021-03-24 | 2022-09-01 | 朝程工業股份有限公司 | Electric vehicle transmission mechanism and electric vehicle |
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