CN112078715A - Intelligent central motor - Google Patents
Intelligent central motor Download PDFInfo
- Publication number
- CN112078715A CN112078715A CN202010990915.7A CN202010990915A CN112078715A CN 112078715 A CN112078715 A CN 112078715A CN 202010990915 A CN202010990915 A CN 202010990915A CN 112078715 A CN112078715 A CN 112078715A
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- planet
- gear
- planetary
- shaft
- sleeved
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- 239000000428 dust Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Images
Classifications
-
- 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
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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
- B62M6/45—Control or actuating devices therefor
-
- 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
- B62M6/45—Control or actuating devices therefor
- B62M6/50—Control or actuating devices therefor characterised by detectors or sensors, or arrangement thereof
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses an intelligent centrally-mounted motor which comprises a shell, wherein a middle shaft and a planetary reduction structure are arranged in the shell, the middle shaft and the planetary reduction structure are connected through an output gear, the output gear is sleeved on the middle shaft through an isolator, a torsion sensing structure is arranged on the middle shaft, and the torsion sensing structure is connected with a controller; the middle shaft and the planet support shaft of the planet speed reducing structure are arranged in parallel. The motor has the advantages of large reduction ratio, small size and good integrity with the whole vehicle.
Description
Technical Field
The invention relates to the field of electric bicycles, in particular to an intelligent middle-mounted motor.
Background
Along with the reinforcing of people's environmental protection consciousness, the electric bicycle that has energy-efficient more and more receives people's favor, and people experience the requirement to the electronic helping hand of current bicycle more and more high, and the start-up of helping hand is with close especially key, and current electronic helping hand motor speed reduction ratio is little, and the volume of motor is great, and is relatively poor with the wholeness of whole car.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an intelligent centrally-mounted motor.
In order to achieve the purpose, the invention adopts the following technical scheme:
an intelligent centrally-mounted motor comprises a shell, wherein a middle shaft and a planetary reduction structure are arranged in the shell, the middle shaft and the planetary reduction structure are connected through an output gear, the output gear is sleeved on the middle shaft through an isolator, a torsion sensing structure is arranged on the middle shaft, and the torsion sensing structure is connected with a controller; the middle shaft and the planet support shaft of the planet speed reducing structure are arranged in parallel.
Preferably, the planetary reduction mechanism comprises a stator fixedly connected with the shell, one end of the planetary support shaft is fixed on the stator or the shell, the other end of the planetary support shaft is fixed on the inner wall of the shell, and the planetary support shaft is sleeved with the rotor; the rotor is fixedly connected with a sun gear sleeved on the planet supporting shaft, the planet supporting shaft is also sleeved with a planet support, and the planet support is connected with the planet supporting shaft through a bearing and is connected with the shell through an inner gear ring; the inner side of the planet carrier is provided with a planet gear, and the planet gear is in gear connection with the sun gear; and a planet output wheel is fixedly arranged on the outer side of the planet support, the planet output wheel is in gear connection with the output gear, and the planet output wheel is in bearing connection with the planet support shaft.
Preferably, the planet support shaft is rotatably connected with the shell, a rotor and a sun gear are fixedly arranged on the planet support shaft, a planet support is further sleeved on the planet support shaft, the planet support is connected with the planet support shaft through a bearing, and a stator is arranged on the shell; the planet support is connected with the planet support shaft through a bearing and is connected with the shell through an inner gear ring; the inner side of the planet carrier is provided with a planet gear, and the planet gear is in gear connection with the sun gear; the planetary output wheel is fixedly arranged on the outer side of the planetary support, the planetary output wheel is in gear connection with the output gear, the planetary output wheel is in bearing connection with the planetary support shaft, and the planetary support shaft and the sun gear are integrally formed.
Preferably, the planet support and the inner gear ring on the inner wall of the shell are connected by helical teeth, and a thrust bearing is arranged between the planet support and the sun gear.
Preferably, the sensor structure comprises a torsion sleeve sleeved on the middle shaft, a strain gauge is adhered on the torsion sleeve, and the strain gauge is connected with the torque circuit board.
Preferably, the two ends of the torsion sleeve are respectively provided with a connecting toothed disc and a ratchet ring gear, the ratchet ring gear and the torsion sleeve are meshed through a ratchet and are in sliding sleeve connection with the middle shaft through teeth, the ratchet ring is provided with a magnetic ring, and the torque sleeve is sleeved with the isolator.
Preferably, the torque circuit board is arranged at one end of the torque sleeve connected with the ratchet ring, a power supply board is fixedly arranged on the inner wall of the shell opposite to the torque circuit board, and the power supply board is connected with the controller.
Preferably, the torsion sleeve is sleeved with a dust hood.
Compared with the prior art, the invention has the beneficial effects that:
1) the motor has the advantages of large reduction ratio, small size and good integrity with the whole vehicle.
2) The invention has simple and exquisite structure, accurately controls the starting and the closing of the motor and has obvious power assisting effect.
3) The whole machine matching structure of the invention has high stability and low power consumption.
The invention is further described below with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic cross-sectional view of a first preferred embodiment of the present invention;
fig. 2 is a schematic sectional structure view of a second preferred embodiment of the present invention.
Detailed Description
In order to more fully understand the technical contents of the present invention, the technical solutions of the present invention will be further described and illustrated with reference to specific embodiments.
As shown in fig. 1 and 2, the intelligent centrally-mounted motor comprises a shell 1, wherein a central shaft 2 and a planetary reduction structure 3 are arranged in the shell 1, the central shaft 2 and the planetary reduction structure 3 are connected through an output gear 4, the output gear 4 is sleeved on the central shaft 2 through an isolator 5, a torsion sensing structure 6 is arranged on the central shaft 2, and the torsion sensing structure 6 is connected with a controller; the central shaft 2 and the planet supporting shaft 31 of the planet speed reducing structure 3 are arranged in parallel. The parallel arrangement of the middle shaft 2 and the planet supporting shaft 31 effectively reduces the volume of the motor, and the integration with the whole vehicle is good. Meanwhile, the motor is accurately controlled to be started and closed, and the power assisting effect is obvious.
Fig. 1 is a schematic cross-sectional view of a first preferred embodiment of the present invention, in which a planetary reduction mechanism 3 includes a stator 32 fixedly connected to a housing 1, a planetary support shaft 31 having one end fixed to the stator 32 or the housing 1 and the other end fixed to an inner wall of the housing 1, and a rotor 33 sleeved on the planetary support shaft 31; the rotor 33 is fixedly connected with a sun gear 34 sleeved on the planet support shaft 31, the planet support shaft 31 is also sleeved with a planet support 35, and the planet support 35 is connected with the planet support shaft 31 through a bearing and is connected with the shell 1 through an inner gear ring 11; a planetary gear 36 is arranged on the inner side of the planetary carrier 35, and the planetary gear 36 is in gear connection with the sun gear 34; the planetary output wheel 37 is fixedly arranged on the outer side of the planetary carrier 35, the planetary output wheel 37 is in gear connection with the output gear 4, and the planetary output wheel 37 is in bearing connection with the planetary supporting shaft 31. The rotor 33, the sun gear 34, the planetary gear 36, the planetary support 35, the planetary output wheel 37 and the output gear 4 sequentially transmit power and complete deceleration assistance, and the structure is compact.
As shown in fig. 2, which is a schematic cross-sectional structure diagram of a second preferred embodiment of the present invention, a planet support shaft 31 is rotatably connected to a housing 1, a rotor 33 and a sun gear 34 are fixedly disposed on the planet support shaft 31, a planet carrier 35 is further sleeved on the planet support shaft 31, the planet carrier 35 is connected to the planet support shaft 31 through a bearing, and a stator 32 is disposed on the housing 1; the planet carrier 35 is connected with the planet supporting shaft 31 through a bearing and is connected with the shell 1 through an inner gear ring 11; a planetary gear 36 is arranged on the inner side of the planetary carrier 35, and the planetary gear 36 is in gear connection with the sun gear 34; the planetary output wheel 37 is fixedly arranged on the outer side of the planetary carrier 35, the planetary output wheel 37 is in gear connection with the output gear 4, the planetary output wheel 37 is in bearing connection with the planetary supporting shaft 31, and the planetary supporting shaft 31 and the sun gear 34 are integrally formed. The planet support shaft 31 is fixedly connected with the rotor 33 and the sun gear 34, the sun gear 34 outputs power, and the power is transmitted among the planet gear 36, the planet carrier 35, the planet output gear 37 and the output gear 4 in sequence to complete the speed reduction assistance, so the structure is compact.
Specifically, the planet carrier 35 is connected with the inner gear ring 11 on the inner wall of the shell 1 through helical teeth, and a thrust bearing 38 is arranged between the planet carrier 35 and the sun gear 34.
Specifically, the sensor structure 6 includes a torsion sleeve 61 sleeved on the central shaft 2, a strain gauge is adhered on the torsion sleeve 61, and the strain gauge is connected with the torque circuit board 65.
Specifically, two ends of the torque sleeve 61 are respectively provided with a connecting toothed disc 63 and a ratchet ring gear 64, the ratchet ring gear 64 and the torque sleeve 61 are meshed through ratchets and are in sliding sleeve connection with the middle shaft 2 through teeth, a magnetic ring is arranged on the ratchet ring gear 64, and the torque sleeve 61 is sleeved with the isolator 5.
Specifically, the torque circuit board 65 is disposed at one end of the torque sleeve connected to the ratchet ring, a power supply board 66 is fixedly disposed on the inner wall of the housing 1 opposite to the torque circuit board 65, and the power supply board 66 is connected to the controller.
Specifically, a dust hood 62 is sleeved outside the torsion sleeve 61.
The working principle of the invention is as follows:
when riding, a pedaling force is applied to the pedals, the pedals drive the chain through the chain wheel 63 and drive the middle shaft 2 to rotate, the middle shaft 2, the ratchet ring 64 and the torque sleeve 61 sequentially transmit power, the strain gauge generates strain, the torque circuit board 65 transmits a signal to the power supply board 66, the power supply board transmits detected torque data for driving the chain wheel 63 to the controller, the controller controls the motor rotor 33 to work according to a power assisting condition, and finally the power is transmitted to the torque sleeve 61 and the chain wheel 63 through the output gear 4 and the isolator 4 to finish power assisting. When the stepping is stopped, the rotor 33 still works to drive the torque sleeve 61 and the chain wheel 63 to rotate, but the ratchet ring 64 is separated from the torque sleeve 61, the magnetic ring is fixed on the ratchet ring 64, the hall on the power supply board 66 detects that the magnetic ring does not rotate, the controller stops working, and the assisting power is stopped. When the rotor 33 stops working or runs off, the one-way clutch 4 is disengaged, and when the rotor 33 works and drives, the one-way clutch 4 is engaged.
The technical contents of the present invention are further described by way of examples only, so as to facilitate the understanding of the reader, but the present invention is not limited to the embodiments, wherein the partial structures and the connection modes of the components can be adjusted according to the actual situation, and any technical extension or re-creation made by the present invention is protected by the present invention.
Claims (8)
1. An intelligent centrally-mounted motor comprises a shell, and is characterized in that a middle shaft and a planetary reduction structure are arranged in the shell, the middle shaft and the planetary reduction structure are connected through an output gear, the output gear is sleeved on the middle shaft through an isolator, a torsion sensing structure is arranged on the middle shaft, and the torsion sensing structure is connected with a controller; the middle shaft and the planet support shaft of the planet speed reducing structure are arranged in parallel.
2. The intelligent centrally-mounted motor according to claim 1, wherein the planetary reduction mechanism comprises a stator fixedly connected with the housing, one end of the planetary support shaft is fixed on the stator or the housing, the other end of the planetary support shaft is fixed on the inner wall of the housing, and the rotor is sleeved on the planetary support shaft; the rotor is fixedly connected with a sun gear sleeved on the planet supporting shaft, the planet supporting shaft is also sleeved with a planet support, and the planet support is connected with the planet supporting shaft through a bearing and is connected with the shell through an inner gear ring; the inner side of the planet carrier is provided with a planet gear, and the planet gear is in gear connection with the sun gear; and a planet output wheel is fixedly arranged on the outer side of the planet support, the planet output wheel is in gear connection with the output gear, and the planet output wheel is in bearing connection with the planet support shaft.
3. The intelligent centrally-mounted motor according to claim 1, wherein the planet support shaft is rotatably connected with a housing, a rotor and a sun gear are fixedly arranged on the planet support shaft, a planet support is further sleeved on the planet support shaft, the planet support is connected with the planet support shaft through a bearing, and a stator is arranged on the housing; the planet support is connected with the planet support shaft through a bearing and is connected with the shell through an inner gear ring; the inner side of the planet carrier is provided with a planet gear, and the planet gear is in gear connection with the sun gear; the planetary output wheel is fixedly arranged on the outer side of the planetary support, the planetary output wheel is in gear connection with the output gear, the planetary output wheel is in bearing connection with the planetary support shaft, and the planetary support shaft and the sun gear are integrally formed.
4. The intelligent centrally-mounted motor according to any one of claims 2 and 3, characterized in that the planet carrier and the inner gear ring on the inner wall of the shell are in inclined tooth connection, and a thrust bearing is arranged between the planet carrier and the sun gear.
5. The intelligent centrally-mounted motor according to claim 1, wherein the sensor structure comprises a torsion sleeve sleeved on the center shaft, a strain gauge is adhered on the torsion sleeve, and the strain gauge is connected with the torque circuit board.
6. The intelligent centrally-mounted motor according to claim 5, wherein the two ends of the torque sleeve are respectively provided with a connecting toothed disc and a ratchet ring gear, the ratchet ring gear and the torque sleeve are engaged through a ratchet and are slidably sleeved with the center shaft through teeth, the ratchet ring is provided with a magnetic ring, and the isolator is sleeved on the torque sleeve.
7. The intelligent centrally-mounted motor according to claim 6, wherein the torque circuit board is arranged at one end of the torque sleeve connected with the ratchet ring, a power supply board is fixedly arranged on the inner wall of the shell opposite to the torque circuit board, and the power supply board is connected with the controller.
8. The intelligent mid-motor set as recited in claim 5, wherein a dust hood is sleeved outside the torsion sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010990915.7A CN112078715A (en) | 2020-09-19 | 2020-09-19 | Intelligent central motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010990915.7A CN112078715A (en) | 2020-09-19 | 2020-09-19 | Intelligent central motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112078715A true CN112078715A (en) | 2020-12-15 |
Family
ID=73738539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010990915.7A Pending CN112078715A (en) | 2020-09-19 | 2020-09-19 | Intelligent central motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112078715A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024178688A1 (en) * | 2023-03-01 | 2024-09-06 | 深圳市大疆创新科技有限公司 | Mid-drive electric motor and electric assist bicycle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203111431U (en) * | 2013-02-04 | 2013-08-07 | 苏州盛亿电机有限公司 | Mid-mounted motor device of electric bicycle |
| CN106428394A (en) * | 2016-09-07 | 2017-02-22 | 新安乃达驱动技术（上海）股份有限公司 | Electric aided-bicycle, as well as built-in motor drive system and control method thereof |
| CN207241949U (en) * | 2017-09-19 | 2018-04-17 | 八方电气(苏州)股份有限公司 | Electric bicycle infinitely variable speed transmission |
| CN207889932U (en) * | 2017-12-21 | 2018-09-21 | 无锡岚凌卓维动力科技有限公司 | A kind of drive mechanism on electric bicycle |
| CN212797210U (en) * | 2020-09-19 | 2021-03-26 | 深圳市喜德盛自行车股份有限公司 | Intelligent central motor |
-
2020
- 2020-09-19 CN CN202010990915.7A patent/CN112078715A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203111431U (en) * | 2013-02-04 | 2013-08-07 | 苏州盛亿电机有限公司 | Mid-mounted motor device of electric bicycle |
| CN106428394A (en) * | 2016-09-07 | 2017-02-22 | 新安乃达驱动技术（上海）股份有限公司 | Electric aided-bicycle, as well as built-in motor drive system and control method thereof |
| CN207241949U (en) * | 2017-09-19 | 2018-04-17 | 八方电气(苏州)股份有限公司 | Electric bicycle infinitely variable speed transmission |
| CN207889932U (en) * | 2017-12-21 | 2018-09-21 | 无锡岚凌卓维动力科技有限公司 | A kind of drive mechanism on electric bicycle |
| CN212797210U (en) * | 2020-09-19 | 2021-03-26 | 深圳市喜德盛自行车股份有限公司 | Intelligent central motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024178688A1 (en) * | 2023-03-01 | 2024-09-06 | 深圳市大疆创新科技有限公司 | Mid-drive electric motor and electric assist bicycle |
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