CN115664108A - Middle motor for electric power-assisted bicycle - Google Patents
Middle motor for electric power-assisted bicycle Download PDFInfo
- Publication number
- CN115664108A CN115664108A CN202211213171.3A CN202211213171A CN115664108A CN 115664108 A CN115664108 A CN 115664108A CN 202211213171 A CN202211213171 A CN 202211213171A CN 115664108 A CN115664108 A CN 115664108A
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- motor
- middle shaft
- ratchet wheel
- output shaft
- electric power
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- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 33
- 230000007246 mechanism Effects 0.000 claims description 23
- 230000000694 effects Effects 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 description 9
- 240000005002 Erythronium dens canis Species 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000009194 climbing Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
- B62M6/40—Rider propelled cycles with auxiliary electric motor
- B62M6/55—Rider propelled cycles with auxiliary electric motor power-driven at crank shafts parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M7/00—Motorcycles characterised by position of motor or engine
- B62M7/02—Motorcycles characterised by position of motor or engine with engine between front and rear wheels
- B62M7/04—Motorcycles characterised by position of motor or engine with engine between front and rear wheels below the frame
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/24—Devices for sensing torque, or actuated thereby
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
Abstract
The invention relates to the field of middle-mounted motors, in particular to a middle-mounted motor for an electric power-assisted bicycle, which comprises a box body, a middle shaft, a motor, an output shaft and a harmonic reducer, wherein the middle shaft, the motor and the harmonic reducer are fixed in the box body, the input end of the middle shaft is used for being connected with a pedal of the bicycle, the output end of the middle shaft is connected with the output shaft, a torque sensor is arranged on the middle shaft, one end of the torque sensor is connected with the middle shaft, the other end of the torque sensor is connected with the output shaft, the motor comprises a stator and a rotor, the stator is sleeved on the outer side of the rotor, the rotor is positioned on the outer ring of the middle shaft, the input end of the harmonic reducer is connected with the rotor, and the output end of the harmonic reducer is connected with the output shaft. According to the invention, the torque sensor is arranged, so that whether the motor participates is more flexibly controlled, the power assisting effect can be provided under the condition of insufficient driving force, and the power assisting more conforms to the use requirements of users.
Description
Technical Field
The invention relates to the field of middle-mounted motors, in particular to a middle-mounted motor for an electric power-assisted bicycle.
Background
The motor in the used of electric power assisted bicycle in existing market mainly reaches the torque requirement of setting for through planet gear or parallel shaft reduction gear, uses the motor in the middle of planet gear or parallel shaft reduction gear manufacturing, and the quality is heavy, and is bulky for the whole weight of bicycle increases and occupation space is big, consequently needs a section small, and during the bicycle was applied to the motor of light in weight, when guaranteeing operating power, made the holistic weight of bicycle descend.
For example, the invention patent of China with the application number of 202011117764.0 discloses an electric vehicle harmonic speed reduction middle motor, which comprises an inner circle arranged on a middle shaft support of an electric vehicle frame, an internal hub motor is arranged inside the inner circle, an external harmonic speed reducer is formed by a pulley type harmonic generator, a flexible gear ring and a rigid gear ring and is positioned at the periphery of the internal hub motor, the deformation of the left end and the right end of the flexible gear ring is symmetrical and consistent, so that the oval outer gear ring is meshed with the rigid inner gear ring in parallel and uniformly, the lengths of the left end and the right end of the flexible gear ring are very short, the axial dimension of the electric vehicle harmonic speed reduction middle motor is reduced, however, the invention realizes whether the electric vehicle assists through a signal output by a Hall sensor instead of controlling whether the electric vehicle assists by torque, when a user needs to decelerate or drive at a low speed, the system misjudgment is easily caused, the motor assist is added, the vehicle speed cannot be slowed down, and the use will of the user cannot be accurately met.
Disclosure of Invention
The invention aims to provide a middle-mounted motor for an electric power-assisted bicycle, which is characterized in that a torque sensor is arranged, torque between a manpower part and an output shaft is measured and then transmitted to a controller end, whether the motor needs power assistance is controlled, when the required torque is larger and manpower cannot provide enough torque, the motor is controlled to participate in driving, power is provided for the running of the bicycle, whether the motor participates in the driving is controlled more flexibly, the power assistance effect can be provided under the condition of insufficient driving force, and the power assistance is more suitable for the use requirements of users.
In order to achieve the purpose, the invention adopts the following technical scheme: the middle motor for the electric power-assisted bicycle comprises a box body, a middle shaft, a motor, an output shaft and a harmonic reducer, wherein the middle shaft, the motor and the harmonic reducer are fixed in the box body, the input end of the middle shaft is used for being connected with a pedal of the bicycle, the output end of the middle shaft is connected with the output shaft, a torque sensor is arranged on the middle shaft, one end of the torque sensor is connected with the middle shaft, the other end of the torque sensor is connected with the output shaft, the motor comprises a stator and a rotor, the stator is sleeved on the outer side of the rotor, the rotor is located on the outer ring of the middle shaft, the input end of the harmonic reducer is connected with the rotor, and the output end of the harmonic reducer is connected with the output shaft. Be provided with torque sensor and measure the relative moment between manpower input's axis and the output shaft, judge whether need intervene electric power and come the auxiliary drive, great when the moment of torsion that needs, and the manpower can't provide sufficient moment of torsion, the control motor participates in the drive, for the going of bicycle provides power, whether control motor participates in more in a flexible way, can just provide the helping hand effect under the circumstances that drive power is not enough, the helping hand more laminates user's user demand.
Preferably, a clutch mechanism is arranged in the box body and used for connecting or separating the output shaft with or from the middle shaft or the output end of the harmonic reducer. The clutch mechanism is arranged to separate the output shaft, the middle shaft and the motor, so that manual power transmission and electric power transmission are not interfered with each other, when the clutch mechanism is used conventionally, the middle shaft and the output shaft are only connected, a vehicle is driven to move forwards through manual power, when torque is insufficient and climbing is needed, the clutch mechanism enables electric power to be involved, the output end of the motor, namely the output end of the harmonic reducer, is connected with the output shaft, so that electric power is driven in an auxiliary mode, and the middle shaft and the output shaft can be separated, so that the vehicle is driven to move forwards through a pure motor.
Preferably, the clutch mechanism comprises an outer ratchet wheel, an inner ratchet wheel and a plurality of stop blocks, the inner ratchet wheel and the outer ratchet wheel are both provided with convex teeth, the inner ratchet wheel is fixed on the output shaft, the outer ratchet wheel is fixed on the outer side of the inner ratchet wheel, the convex teeth on the inner ratchet wheel face the middle shaft, the convex teeth on the outer ratchet wheel face the inner ratchet wheel, and the stop blocks are used for being clamped with the convex teeth on the outer ratchet wheel or the convex teeth on the inner ratchet wheel. Through setting up the ratchet, realize clutching function of clutching mechanism mutually supports dogtooth and stop block, utilizes dogtooth and stop block relative motion trend to drive, drives the ratchet and rotates when stop block and dogtooth joint, and when stop block and dogtooth contactless, do not transmit between the ratchet, form intermittent drive's form, simple structure, simple to operate.
Preferably, the stop block comprises a spring and a fixed block fixed on the spring, grooves are formed in the outer ratchet wheel and the inner ratchet wheel, one end of the spring is fixed in the groove, and the other end of the spring is fixedly connected with the fixed block. The stop block is arranged in the groove, the spring is supported by the bottom of the groove, the movable fixing block extends out of the groove and is clamped with the convex teeth to form transmission, a combination structure of the clutch structure is formed, and the movable fixing block can also retract into the groove to form a separation form of the clutch structure.
Preferably, one side edge of the convex tooth is an inclined slope, the other side edge of the convex tooth is arranged along the radial direction, and the width of the fixing block is smaller than that of the groove. The fixing block is smaller than the groove in width, so that the fixing block can move along the radial direction, and the fixing block can conveniently slide along the inclined plane of the convex teeth.
Preferably, the height of the fixing block is smaller than the depth of the groove. The degree of depth that highly is less than the recess of fixed block makes things convenient for the fixed block to block into the recess completely in, can make the fixed block break away from the scope of dogtooth completely on the one hand, makes not transmission between the ratchet, forms the separation form of separation and reunion structure, and on the other hand can make the fixed block enter into the recess completely when the inclined plane slides again, does not have the clearance between each dogtooth and the adjacent ratchet, and the drunkenness is located next dogtooth when avoiding the fixed block to slide along the inclined plane, increases transmission structure's stability.
Preferably, the clutch mechanism comprises a middle shaft accessory, the middle shaft accessory is connected with the output shaft through a bearing, and one end of the torque sensor is connected with the output shaft through connection with the middle shaft accessory. The middle shaft accessory is used for transmitting the torque of the output shaft to the torque sensor, and meanwhile, the middle shaft accessory is provided with a bearing to enable the structure to be stable and bear enough radial load.
Preferably, one side of the middle shaft accessory is connected with the middle shaft through a needle bearing, the other side of the middle shaft accessory is also connected with the output shaft through a needle bearing, and a deep groove ball bearing for axial limiting is further arranged between the middle shaft accessory and the output shaft. Through setting up bearing, can not only bear great radial load and fix the axis annex better, also can make radial dimension compressed simultaneously, thereby make holistic structure compacter, bearing's frictional resistance is little simultaneously, mechanical efficiency is higher, use and conveniently combine in clutching mechanism department, thereby start faster, be provided with deep groove ball bearing simultaneously, be used for bearing axial load, it is spacing to be convenient for carry out the axial when installation flywheel or other parts, improve the convenience and the qualification rate of installation.
Preferably, the middle motor for the electric power-assisted bicycle comprises a control panel and a motor case cover, wherein the control panel is used for controlling the motor, the motor case cover is arranged on the outer side of the motor, and the motor case cover is fixedly connected with the harmonic reducer through a bearing. The control panel is arranged, and after signals sensed by the torque sensor are input, control instructions are output to the motor, so that the function of the motor-assisted bicycle is realized.
Preferably, the harmonic reducer and the motor are sleeved outside the middle shaft, the harmonic reducer comprises a wave generator, the wave generator is fixedly connected with the motor rotor, and the wave generator is connected with the motor box cover through a ball bearing. The wave generator and the motor rotor are fixed into a whole through press mounting and glue dispensing, so that the output end of the motor is directly connected with the harmonic reducer, and the structure is more compact.
The invention has the advantages that: the torque sensor is arranged, so that after the torque between the manpower part and the output shaft is measured, the torque is transmitted to the controller end, whether the motor needs to be assisted or not is controlled, when the required torque is large and the manpower cannot provide enough torque, the motor is controlled to participate in driving, power is provided for driving of the bicycle, whether the motor participates or not is controlled more flexibly, the assistance effect can be provided under the condition of insufficient driving force, and the assistance meets the use requirements of users; .
Drawings
Fig. 1 is a structural view of a mid-motor for an electric power assisted bicycle of the present invention.
Fig. 2 is a first working state diagram of the middle motor clutch mechanism for the electric power-assisted bicycle of the present invention.
Fig. 3 is a second operating state diagram of the mid-motor clutch mechanism for the electric power assisted bicycle of the present invention.
Fig. 4 is a third operating state diagram of the mid-motor clutch mechanism for the electric power-assisted bicycle of the present invention.
Fig. 5 is a fourth operating state diagram of the mid-motor clutch mechanism for the electric power assisted bicycle of the present invention.
Detailed Description
The invention is further described below with reference to the figures and specific embodiments.
As shown in fig. 1, a middle motor for an electric power-assisted bicycle, comprises a box body 1, a middle shaft 2, a motor 3, an output shaft 4 and a harmonic reducer 5, wherein the middle shaft 2, the motor 3 and the harmonic reducer 5 are fixed in the box body 1, the input end of the middle shaft 2 is used for connecting a pedal of the bicycle, the output end of the middle shaft 2 is connected with the output shaft 4, the middle shaft 2 is provided with a torque sensor 6, one end of the torque sensor 6 is connected with the middle shaft 2, the other end of the torque sensor 6 is connected with the output shaft 4, the motor 3 comprises a stator 31 and a rotor 32, the stator 31 is sleeved on the outer side of the rotor 32, the rotor 32 is positioned on the outer ring of the middle shaft 2, the input end of the harmonic reducer 5 is connected with the rotor 32, and the output end of the harmonic reducer 5 is connected with the output shaft 4. Be provided with torque sensor 6 and measure the relative moment between axis 2 and the output shaft 4 of manpower input, judge whether need intervene electric power and come auxiliary drive, it is great when the moment of torsion that needs, and the manpower can't provide sufficient moment of torsion, control motor 3 comes in the drive, provide power for the traveling of bicycle, control motor 3 whether participate in more in a flexible way, can just provide the helping hand effect under the circumstances that drive power is not enough, the helping hand is more laminated user's user demand, torque sensor assembles between axis 2 and output shaft 4, only have data feedback when having relative moment between axis 2 and output shaft 4, the security and the reaction rate of whole motor 3 have been increased.
As shown in fig. 1 to 5, a clutch mechanism 7 is arranged in the case 1, the clutch mechanism 7 is used for engaging or disengaging the output shaft 4 with or from the output end of the middle shaft 2 or the harmonic reducer 5, the clutch mechanism 7 includes an outer ratchet wheel 71, an inner ratchet wheel 72 and a stop block 73, the inner ratchet wheel 72 and the outer ratchet wheel 71 are both provided with convex teeth 8, each stop block 73 corresponds to each convex tooth 8, the inner ratchet wheel 72 is fixed on the output shaft 4, the outer ratchet wheel 71 is fixed on the outer side of the inner ratchet wheel 72, the convex teeth 8 on the inner ratchet wheel 72 face the middle shaft 2, the convex teeth 8 on the outer ratchet wheel 71 face the inner ratchet wheel 72, the stop block 73 is used for being clamped with the convex teeth 8 on the outer ratchet wheel 71 or the convex teeth 8 on the inner ratchet wheel 72, the stop block 73 includes a spring 9 and a fixed block 10 fixed on the spring 9, the outer ratchet wheel 71 and the inner ratchet wheel 72 are both provided with a groove 11, one end of the spring 9 is fixed in the groove 11, the other end of the spring 9 is fixedly connected with the fixed block 10, one side of the convex teeth 8 is an inclined slope, the other side of the convex teeth 8 is arranged along a radial direction, the width of the fixed block 10 is smaller than the groove 11, and the depth of the groove 11 is smaller than the groove 11. The clutch mechanism 7 is arranged, the output shaft 4, the middle shaft 2 and the motor 3 are separated by the clutch mechanism 7, manual transmission and electric transmission are not interfered with each other, when the vehicle is used normally, only the middle shaft 2 is connected with the output shaft 4, the vehicle is driven to move forwards through manpower, when the torque is insufficient and climbing is needed, the clutch mechanism 7 enables electric power to be involved, the output end of the motor 3, namely the output end of the harmonic reducer 5, is connected with the output shaft 4, so that electric power is driven in an auxiliary mode, and the middle shaft 2 and the output shaft 4 can be separated, so that the vehicle is driven to move forwards through the pure motor 3. When the locking structure is used, the whole stopping block 73 is arranged in the groove 11, the spring 9 is supported by the bottom of the groove 11, the movable fixing block 10 extends out of the groove 11 and is clamped with the convex teeth 8 to form transmission, a combined structure of the clutch structure is formed, the movable fixing block 10 can also retract into the groove 11 to form a separation form of the clutch structure, the convex teeth 8 are arranged to be similar to a sawtooth shape and suitable for bearing one-way load, and a one-way transmission structure of a ratchet wheel and a locking structure in the other direction are formed, the width of the fixing block 10 is smaller than that of the groove 11, so that the fixing block 10 can move along the radial direction, and the fixing block 10 can conveniently slide along the inclined plane of the convex teeth 8.
As shown in fig. 1, the clutch mechanism 7 includes a middle shaft attachment 12, the middle shaft attachment 12 is connected to the output shaft 4 through a bearing, and one end of the torque sensor 6 is connected to the output shaft 4 through the connection with the middle shaft attachment 12. The middle shaft attachment 12 is arranged to transmit the torque of the output shaft 4 to the torque sensor 6, and the middle shaft attachment 12 is provided with bearings to stabilize the structure and bear sufficient radial load. One side of the middle shaft accessory 12 is connected with the middle shaft 2 through a needle bearing 14, the other side of the middle shaft accessory 12 is also connected with the output shaft 4 through the needle bearing 14, and a deep groove ball bearing 15 for axial limiting is further arranged between the middle shaft accessory 12 and the output shaft 4. The multilayer needle roller structure separates the middle shaft 2, the power output part of the motor 3, the output shaft 4 and the torsion sensor part, the structure is compact as much as possible while bearing high radial load, meanwhile, the friction resistance of the needle roller bearing 14 is small, the mechanical efficiency is higher, the multi-layer needle roller structure is conveniently combined at the position of the clutch mechanism 7, and therefore the multi-layer needle roller structure can be started more quickly, meanwhile, the deep groove ball bearing 15 is arranged and used for bearing axial load, axial limiting is convenient to carry out when a flywheel or other parts are installed, and the convenience and the qualification rate of installation are improved.
As shown in fig. 1, the middle motor for an electric power-assisted bicycle comprises a control board 17 and a motor case cover 16, wherein the control board 17 is used for controlling the motor 3, the motor case cover 16 is covered on the outer side of the motor 3, and the motor case cover 16 is connected and fixed with the harmonic reducer 5 through a bearing. The control board 17 is arranged to output a control instruction to the motor 3 after a signal sensed by the torque sensor 6 is input, so that the function of the motor 3 for assisting the bicycle is realized. The harmonic reducer 5 and the motor 3 are both sleeved outside the middle shaft 2, the harmonic reducer 5 comprises a wave generator 13, the wave generator 13 is fixedly connected with a rotor 32 of the motor 3, and the wave generator 13 is connected with a motor box cover 16 through a ball bearing. The wave generator 13 and the motor 3 rotor 32 are fixed into a whole through press mounting and glue dispensing, so that the output end of the motor 3 is directly connected with the harmonic reducer 5, and the structure is more compact.
In the concrete use, the following four conditions exist, and the motor 3 and people do not apply power during the downhill sliding process.
As shown in figure 2, the outer ratchet wheel 71 and the middle shaft 2 of the manual pedal power part are both in a static state, when the output shaft 4 runs clockwise, the stop block 73 is under the action of the inclined surface, the spring 9 is compressed, the fixed block 10 moves, and the output shaft 4 can freely run clockwise.
When the bicycle is driven by only one force to run, as shown in fig. 3, the outer ratchet wheel 71 is in a static state, the middle shaft 2 runs clockwise under the action of the force, the spring 9 ejects the fixed block 10 out to be locked with the convex teeth 8 of the outer ratchet wheel 71 on the output shaft 4, and the output shaft 4 is driven to run clockwise. The fixed block 10 on the outer stop block 73 is under the action of the inclined surface, the spring 9 is compressed, and the outer ratchet wheel 71 is completely separated.
When only the motor 3 drives the bicycle to run, as shown in fig. 4, the middle shaft 2 of the manual pedal power part is in a static state, the outer ratchet wheel 71 runs clockwise under the action of the motor 3, the spring 9 ejects the fixed block 10 out to be clamped with the convex teeth 8 of the outer ratchet wheel 71, and the output shaft 4 is driven to run clockwise. The inner stop block 73 is under the effect of the ramp, the spring 9 is compressed and completely disengaged from the bottom bracket 2.
When the motor 3 and manpower drive the bicycle together to run, as shown in fig. 5, the outer ratchet 71 runs clockwise under the action of the motor 3, meanwhile, the middle shaft 2 runs clockwise under the action of the manpower, the springs 9 on the inner side and the outer side eject the fixed block 10 out to be clamped with the convex teeth 8 of the outer ratchet 71 and the inner ratchet 72, the output shaft 4 is driven to run clockwise together, and the sizes of the motor 3 and the manpower are distributed by the control board 17.
Claims (10)
1. The utility model provides a put motor in electric power assisted bicycle is with which characterized in that: the motor comprises a box body, a middle shaft, a motor, an output shaft and a harmonic reducer, wherein the middle shaft, the motor and the harmonic reducer are fixed in the box body, the input end of the middle shaft is used for being connected with a pedal of a bicycle, the output end of the middle shaft is connected with the output shaft, a torque sensor is arranged on the middle shaft, one end of the torque sensor is connected with the middle shaft, the other end of the torque sensor is connected with the output shaft, the motor comprises a stator and a rotor, the stator is sleeved on the outer side of the rotor, the rotor is located on the outer ring of the middle shaft, the input end of the harmonic reducer is connected with the rotor, and the output end of the harmonic reducer is connected with the output shaft.
2. The center-mounted motor for an electric power-assisted bicycle according to claim 1, characterized in that: and a clutch mechanism is arranged in the box body and used for connecting or separating the output shaft with or from the output end of the middle shaft or the harmonic reducer.
3. The center-mounted motor for an electric power-assisted bicycle according to claim 2, characterized in that: the clutch mechanism comprises an outer ratchet wheel, an inner ratchet wheel and a plurality of stop blocks, convex teeth are arranged on the inner ratchet wheel and the outer ratchet wheel, the inner ratchet wheel is fixed on the output shaft, the outer ratchet wheel is fixed on the outer side of the inner ratchet wheel, the convex teeth on the inner ratchet wheel face the middle shaft, the convex teeth on the outer ratchet wheel face the inner ratchet wheel, and the stop blocks are used for being clamped with the convex teeth on the outer ratchet wheel or the convex teeth on the inner ratchet wheel.
4. The center-mounted motor for an electric power-assisted bicycle according to claim 3, characterized in that: the stop block comprises a spring and a fixed block fixed on the spring, grooves are formed in the outer ratchet wheel and the inner ratchet wheel, one end of the spring is fixed in the groove, and the other end of the spring is fixedly connected with the fixed block.
5. The center-mounted motor for an electric power-assisted bicycle according to claim 4, characterized in that: one side edge of each convex tooth is an inclined slope, the other side edge of each convex tooth is arranged along the radial direction, and the width of each fixing block is smaller than that of each groove.
6. The center-mounted motor for an electric power-assisted bicycle according to claim 5, characterized in that: the height of the fixing block is smaller than the depth of the groove.
7. The center motor for an electric power-assisted bicycle according to claim 2, 3, 4, 5, or 6, wherein: the clutch mechanism comprises a middle shaft accessory, the middle shaft accessory is connected with the output shaft through a bearing, and one end of the torque sensor is connected with the output shaft through the connection with the middle shaft accessory.
8. The center-mounted motor for an electric power-assisted bicycle according to claim 7, characterized in that: one side of the middle shaft accessory is connected with the middle shaft through a needle bearing, the other side of the middle shaft accessory is also connected with the output shaft through a needle bearing, and a deep groove ball bearing used for axial limiting is further arranged between the middle shaft accessory and the output shaft.
9. The center-mounted motor for an electric power-assisted bicycle according to claim 1, characterized in that: the control panel is used for controlling the motor, the motor case cover is arranged on the outer side of the motor, and the motor case cover is fixedly connected with the harmonic reducer through a bearing.
10. The center-mounted motor for an electric power-assisted bicycle according to claim 9, characterized in that: the harmonic reducer and the motor are sleeved outside the middle shaft, the harmonic reducer comprises a wave generator, the wave generator is fixedly connected with the motor rotor, and the wave generator is connected with the motor box cover through a ball bearing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211213171.3A CN115664108A (en) | 2022-09-29 | 2022-09-29 | Middle motor for electric power-assisted bicycle |
| PCT/CN2023/103083 WO2024066552A1 (en) | 2022-09-29 | 2023-06-28 | Mid-drive electric motor for electric power-assisted bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211213171.3A CN115664108A (en) | 2022-09-29 | 2022-09-29 | Middle motor for electric power-assisted bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115664108A true CN115664108A (en) | 2023-01-31 |
Family
ID=84985030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211213171.3A Pending CN115664108A (en) | 2022-09-29 | 2022-09-29 | Middle motor for electric power-assisted bicycle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115664108A (en) |
| WO (1) | WO2024066552A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116707221A (en) * | 2023-08-01 | 2023-09-05 | 哈尔滨艾拓普科技有限公司 | Vector matrix cycloid motor speed reducer |
| WO2024066552A1 (en) * | 2022-09-29 | 2024-04-04 | 浙江联宜电机有限公司 | Mid-drive electric motor for electric power-assisted bicycle |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10318860A (en) * | 1997-05-14 | 1998-12-04 | Mitsubishi Heavy Ind Ltd | Driving unit for power-assisted bicycle |
| CN2894047Y (en) * | 2006-03-20 | 2007-04-25 | 上海中广电动车有限公司 | Electric bicycle harmonic reducing speed driving device |
| CN102255421A (en) * | 2011-06-21 | 2011-11-23 | 张宏艳 | Medium-arranged drive motor and variable-speed gear |
| CN109866866A (en) * | 2019-04-11 | 2019-06-11 | 舍弗勒技术股份两合公司 | Moped Scooter and transmission device |
| CN111846096A (en) * | 2020-07-09 | 2020-10-30 | 大川电机科技(江苏)有限公司 | Torque sensor, middle-placed motor and electric power-assisted bicycle |
| CN114684318B (en) * | 2022-03-15 | 2023-09-22 | 苏州绿的谐波传动科技股份有限公司 | Centrally-mounted driving device and power-assisted bicycle |
| CN115664108A (en) * | 2022-09-29 | 2023-01-31 | 东阳市联宜机电有限公司 | Middle motor for electric power-assisted bicycle |
-
2022
- 2022-09-29 CN CN202211213171.3A patent/CN115664108A/en active Pending
-
2023
- 2023-06-28 WO PCT/CN2023/103083 patent/WO2024066552A1/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024066552A1 (en) * | 2022-09-29 | 2024-04-04 | 浙江联宜电机有限公司 | Mid-drive electric motor for electric power-assisted bicycle |
| CN116707221A (en) * | 2023-08-01 | 2023-09-05 | 哈尔滨艾拓普科技有限公司 | Vector matrix cycloid motor speed reducer |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024066552A1 (en) | 2024-04-04 |
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