CN110758629A - Middle-mounted motor transmission mechanism and electric moped driving system - Google Patents
Middle-mounted motor transmission mechanism and electric moped driving system Download PDFInfo
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- CN110758629A CN110758629A CN201911061705.3A CN201911061705A CN110758629A CN 110758629 A CN110758629 A CN 110758629A CN 201911061705 A CN201911061705 A CN 201911061705A CN 110758629 A CN110758629 A CN 110758629A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 125
- 208000032369 Primary transmission Diseases 0.000 claims abstract description 25
- 208000032370 Secondary transmission Diseases 0.000 claims abstract description 25
- 238000010586 diagram Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
- B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
- B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
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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
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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
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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 relates to the technical field of electric moped, in particular to a middle-mounted motor transmission mechanism and a driving system of the electric moped. The invention provides a transmission mechanism of a mid-motor, which comprises a primary transmission shaft and a secondary transmission shaft, wherein the primary transmission shaft is provided with a first transmission gear and a second transmission gear, the number of teeth of the first transmission gear is greater than that of the second transmission gear, and the first transmission gear is configured to be in transmission connection with the output end of the mid-motor; be provided with third driving gear and fourth driving gear on the secondary drive axle, the number of teeth of third driving gear is greater than the number of teeth of fourth driving gear, and third driving gear meshes with the second driving gear mutually, and the fourth driving gear is configured to be connected with output shaft transmission. The middle-arranged motor transmission mechanism can realize multi-stage speed change, and is small in size and convenient to install. The driving system of the electric moped provided by the invention can realize multi-stage speed change by applying the middle motor transmission mechanism, and has small volume.
Description
Technical Field
The invention relates to the technical field of electric moped, in particular to a middle-mounted motor transmission mechanism and a driving system of the electric moped.
Background
The electric moped can realize two driving modes of manpower driving and electric power-assisted driving, and can provide corresponding electric power-assisted support according to different proportions according to the force of treading the pedal by a rider. The electric power assistance of the electric power-assisted vehicle generally comprises two forms, one is that the electric power assistance is realized by utilizing a hub motor, the hub motor is that a motor is integrated and arranged in a drum barrel, and the motor converts electric energy into mechanical energy after being electrified so as to drive wheels to rotate; the other type is that the electric power assistance is realized by using a middle-arranged motor, the middle-arranged motor needs to transmit the power output by the motor to an output shaft of the electric power-assisted vehicle through a transmission mechanism, then the power is transmitted to the chain wheel through the output shaft, and finally the power of the chain wheel is transmitted to the wheels through a chain, so that the rotation of the wheels is realized.
In order to realize the transmission of the power of the middle-mounted motor and reduce the rotating speed of the middle-mounted motor, the existing middle-mounted motor transmission mechanism generally comprises a plurality of gears which are arranged in a parallel unfolding mode, and the arrangement mode enables the transmission mechanism to be large in size, large in longitudinal occupied space and inconvenient to install.
Therefore, a new middle motor transmission mechanism is needed to solve the above problems.
Disclosure of Invention
The invention aims to provide a middle-mounted motor transmission mechanism which can realize multi-stage speed change, is small in size and convenient to install.
The invention also aims to provide a driving system of the electric moped, which can realize multi-stage speed change and has small volume by applying the middle-arranged motor transmission mechanism.
In order to realize the purpose, the following technical scheme is provided:
a center-mounted motor transmission mechanism for transmitting power of a center-mounted motor to an output shaft, the center-mounted motor transmission mechanism comprising:
the primary transmission shaft is provided with a first transmission gear and a second transmission gear, the number of teeth of the first transmission gear is greater than that of the second transmission gear, and the first transmission gear is configured to be in transmission connection with the output end of the mid-set motor;
the secondary transmission shaft is provided with a third transmission gear and a fourth transmission gear, the number of the third transmission gear is greater than that of the fourth transmission gear, the third transmission gear is meshed with the second transmission gear, and the fourth transmission gear is configured to be in transmission connection with the output shaft;
the primary transmission shaft and the secondary transmission shaft are configured to be arranged on two sides of a connecting line of a central point of an output end of the middle motor and a central point of the output shaft.
As a preferable aspect of the centrally-mounted motor drive mechanism, the primary drive shaft and the secondary drive shaft are arranged to be disposed on both sides of a perpendicular bisector of the connecting line.
As a preferable scheme of the transmission mechanism of the middle-mounted motor, the range of the vertical distance H1 between the primary transmission shaft and the connecting line is 0 mm-30 mm, and the range of the vertical distance D1 between the primary transmission shaft and the vertical bisector of the connecting line is 0 mm-30 mm.
As a preferable scheme of the transmission mechanism of the central motor, the range of the vertical distance H2 from the secondary transmission shaft to the connecting line is 0mm to 30mm, and the range of the vertical distance D2 equal to the vertical bisector from the secondary transmission shaft to the connecting line is 0mm to 30 mm.
As a preferable scheme of the transmission mechanism of the central motor, the vertical distance H1 from the primary transmission shaft to the connecting line is 6mm, and the vertical distance D1 from the primary transmission shaft to the perpendicular bisector of the connecting line is 10 mm.
As a preferable scheme of the middle motor transmission mechanism, the vertical distance H2 from the secondary transmission shaft to the connecting line is 25mm, and the vertical distance D2 from the secondary transmission shaft to the vertical bisector of the connecting line is 7 mm.
As a preferable scheme of the middle-mounted motor transmission mechanism, the first transmission gear is located above the second transmission gear, and the third transmission gear is located above the fourth transmission gear.
As a preferable scheme of the transmission mechanism of the central motor, the first transmission gear, the second transmission gear, the third transmission gear and the fourth transmission gear are all helical gears.
As a preferable scheme of the middle-mounted motor transmission mechanism, the tooth directions of the first transmission tooth and the second transmission tooth are the same, the tooth directions of the third transmission tooth and the fourth transmission tooth are the same, and the tooth direction of the third transmission tooth is opposite to the tooth direction of the first transmission tooth.
The driving system of the electric moped comprises a middle-arranged motor, an output shaft and the middle-arranged motor transmission mechanism, wherein the middle-arranged motor transmission mechanism is used for transmitting the power of the middle-arranged motor to the output shaft.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a transmission mechanism of a mid-motor, which comprises a primary transmission shaft and a secondary transmission shaft, wherein the primary transmission shaft is provided with a first transmission gear and a second transmission gear, the number of teeth of the first transmission gear is greater than that of the second transmission gear, and the first transmission gear is configured to be in transmission connection with the output end of the mid-motor; be provided with third driving gear and fourth driving gear on the secondary drive axle, the number of teeth of third driving gear is greater than the number of teeth of fourth driving gear, and third driving gear meshes with the second driving gear mutually, and the fourth driving gear is configured to be connected with output shaft transmission. The middle-arranged motor transmission mechanism can realize multi-stage speed change, and is small in size and convenient to install.
The driving system of the electric moped provided by the invention can realize multi-stage speed change by applying the middle motor transmission mechanism, and has small volume.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a driving system of an electric bicycle according to an embodiment of the present invention;
FIG. 2 is a schematic view of an angle structure of a driving system of an electric bicycle according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of another angle of the electric bicycle driving system according to the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a first housing according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a second housing according to an embodiment of the present invention.
Reference numerals:
100-a housing; 101-a first housing; 102-a second housing; 200-middle motor; 300-one-stage transmission shaft; 301-a first drive tooth; 302-a second gear; 400-a secondary drive shaft; 401-third gear; 402-a fourth gear;
1-medial axis;
2-shaft sleeve;
3-an output shaft; 31-a chain wheel transmission gear; 32-motor drive teeth.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only or to distinguish different structures or components, and are not to be construed as indicating or implying relative importance.
In the present embodiment, as shown in fig. 1, "lateral" refers to a vehicle body width direction when the electric power-assisted vehicle is in normal running; the depth refers to the height direction of the electric moped body when the electric moped runs normally; the longitudinal direction refers to the length direction of the vehicle body when the electric moped runs normally.
As shown in fig. 2 to 3, the present embodiment provides a mid-motor transmission mechanism for transmitting the power of a mid-motor 200 to an output shaft 3. The transmission mechanism of the middle-placed motor comprises a primary transmission shaft 300 and a secondary transmission shaft 400, wherein a first transmission tooth 301 and a second transmission tooth 302 are arranged on the primary transmission shaft 300, the number of teeth of the first transmission tooth 301 is greater than that of the second transmission tooth 302, and the first transmission tooth 301 is configured to be in transmission connection with the output end of the middle-placed motor 200; be provided with third driving gear 401 and fourth driving gear 402 on secondary drive shaft 400, the number of teeth of third driving gear 401 is greater than the number of teeth of fourth driving gear 402, and third driving gear 401 meshes with second driving gear 302 mutually, and fourth driving gear 402 is configured to be connected with output shaft 3 transmission. The middle-arranged motor transmission mechanism can realize multi-stage speed change, and is small in size and convenient to install.
Specifically, on one hand, the first transmission gear 301 and the second transmission gear 302 with different tooth numbers are arranged on the first-stage transmission shaft 300, and the third transmission gear 401 and the fourth transmission gear 402 with different tooth numbers are arranged on the second-stage transmission shaft 400, so that multi-stage speed change from the middle-mounted motor 200 to the output shaft 3 can be realized, and power transmission is realized; on the other hand, the primary transmission shaft 300 and the secondary transmission shaft 400 are configured to be arranged on two sides of a connecting line of the central point of the output end of the middle motor 200 and the central point of the output shaft 3, so that the transverse and height space is fully utilized, the longitudinal distance of the transmission mechanism of the middle motor is reduced, the longitudinal distance between the middle motor 200 and the output shaft 3 is reduced, the structure of the driving system of the electric moped can be more compact, and meanwhile, the middle motor 200 and the transmission mechanism thereof are convenient to install.
Preferably, as shown in fig. 3, the first driving tooth 301 is located above the second driving tooth 302, and the third driving tooth 401 is located above the fourth driving tooth 402, so that the transverse space is fully utilized, and the longitudinal length and height of the transmission are reduced.
Optionally, the first gear teeth 301, the second gear teeth 302, the third gear teeth 401 and the fourth gear teeth 402 are all helical teeth to improve the efficiency of power transmission.
Further, the first driving tooth 301 and the second driving tooth 302 have the same tooth direction, the third driving tooth 401 and the fourth driving tooth 402 have the same tooth direction, and the third driving tooth 401 has the opposite tooth direction to the first driving tooth 301.
In this embodiment, the output end of the mid-motor 200 is provided with a helical gear, which is engaged with the first transmission gear 301 to transmit power to the primary transmission shaft 300, so that the second transmission gear 302 rotates along with the rotation of the primary transmission shaft 300, and further drives the third transmission gear 401 to transmit power to the secondary transmission shaft 400, so that the fourth transmission gear 402 rotates along with the rotation of the secondary transmission shaft 400, and finally transmits power to the output shaft 3.
Further, be provided with chain wheel driving tooth 31 and motor driving tooth 32 on the output shaft 3, motor driving tooth 32 meshes with fourth driving tooth 402 mutually, and chain wheel driving tooth 31 is connected with the chain wheel transmission, then transmits power for the wheel through the chain, realizes that the wheel rotates.
Preferably, the primary and secondary drive shafts 300 and 400 are configured to be disposed on both sides of a perpendicular bisector of the connecting line. By arranging the primary transmission shaft 300 and the secondary transmission shaft 400 at both sides of the perpendicular bisector of the connecting line, the space between the center motor 200 and the output shaft 3 can be fully utilized, and the power of the center motor 200 can be conveniently transmitted to the output shaft 3.
Illustratively, in the present embodiment, the primary transmission shaft 300 and the secondary transmission shaft 400 are located at two sides of the connecting line and at two sides of the perpendicular bisector of the connecting line, so as to control the overall volume of the mid-motor 200 and the transmission mechanism thereof while facilitating power transmission.
Preferably, the vertical distance H1 from the primary transmission shaft 300 to the connecting line ranges from 0mm to 30mm, and the vertical distance D1 from the primary transmission shaft 300 to the perpendicular bisector of the connecting line ranges from 0mm to 30 mm. Further, the range of the vertical distance H2 between the secondary transmission shaft 400 and the connecting line is 0 mm-30 mm, and the range of the vertical distance D2 which is equal to the vertical bisector between the secondary transmission shaft 400 and the connecting line is 0 mm-30 mm. Through this setting, put motor drive mechanism's reduction ratio scope in can control between 30 ~ 70, and electric bicycle actuating system's whole overall dimension can be controlled in 172mm 100 mm.
Illustratively, the length of the connecting line is 82mm, the vertical distance H1 from the primary drive shaft 300 to the connecting line is 6mm, and the vertical distance D1 from the primary drive shaft 300 to the perpendicular bisector of the connecting line is 10 mm. The vertical distance H2 from the secondary transmission shaft 400 to the connecting line is 25mm, and the vertical distance D2 from the secondary transmission shaft 400 to the perpendicular bisector of the connecting line is 7 mm.
The embodiment also provides an electric moped driving system, which comprises a middle-arranged motor 200, an output shaft 3 and the middle-arranged motor transmission mechanism, wherein the middle-arranged motor transmission mechanism is used for transmitting the power of the middle-arranged motor 200 to the output shaft 3, and the middle-arranged motor transmission mechanism is applied, so that multi-stage speed change can be realized, and the size is small.
In order to facilitate the installation and support of the mid-motor 200, the mid-motor transmission mechanism and the output shaft 3, as shown in fig. 4-5, the driving system of the electric bicycle further includes a housing 100. Illustratively, the housing 100 includes a first housing 101 and a second housing 102, and the first housing 101 and the second housing 102 are assembled to form the housing 100.
Specifically, a through hole is formed in the first casing 101, one end of the middle motor 200 penetrates out of the through hole, the other end of the middle motor is fixedly arranged on the mounting plate, and then the mounting plate is fixedly connected with the first casing 101. A first limit groove is formed in the second housing 102, one end of the primary transmission shaft 300 is rotatably disposed on the mounting plate, the other end of the primary transmission shaft 300 is rotatably disposed in the first limit groove, and a rolling bearing is disposed between the primary transmission shaft 300 and the first limit groove to ensure that the primary transmission shaft 300 can stably rotate.
Further, a second limiting groove is formed in the first housing 101, a third limiting groove is formed in the second housing 102, and two ends of the secondary transmission shaft 400 are rotatably connected with the second limiting groove and the third limiting groove respectively, so that the secondary transmission shaft 400 is supported and mounted. Rolling bearings are disposed between the secondary transmission shaft 400 and the second limit groove and between the secondary transmission shaft 400 and the third limit groove to ensure that the secondary transmission shaft 400 can stably rotate.
Preferably, the electric bicycle driving system further comprises a middle shaft 1, a shaft sleeve 2 and an overrunning clutch, the shaft sleeve 2 is connected with the middle shaft 1 through a spline to achieve power transmission between the middle shaft 1 and the shaft sleeve 2, and the shaft sleeve 2 is in transmission connection with the output shaft 3 through the overrunning clutch to achieve power transmission of the shaft sleeve 2 to the output shaft 3. In order to install and fix the middle shaft 1, through holes are formed in the first shell 101 and the second shell 102, two ends of the middle shaft 1 penetrate through the two through holes respectively and are connected with the pedal crank, and manual power transmission is achieved.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A center-mounted motor transmission mechanism for transmitting power of a center-mounted motor (200) to an output shaft (3), characterized by comprising:
the primary transmission shaft (300) is provided with a first transmission gear (301) and a second transmission gear (302), the number of the first transmission gear (301) is greater than that of the second transmission gear (302), and the first transmission gear (301) is configured to be in transmission connection with the output end of the middle-mounted motor (200);
a secondary transmission shaft (400) provided with a third transmission gear (401) and a fourth transmission gear (402), wherein the number of the third transmission gear (401) is greater than that of the fourth transmission gear (402), the third transmission gear (401) is meshed with the second transmission gear (302), and the fourth transmission gear (402) is configured to be in transmission connection with the output shaft (3);
the primary transmission shaft (300) and the secondary transmission shaft (400) are configured to be disposed on both sides of a line connecting a center point of an output end of the center motor (200) and a center point of the output shaft (3).
2. The centrally-mounted motor drive mechanism according to claim 1, characterized in that the primary drive shaft (300) and the secondary drive shaft (400) are configured to be disposed on either side of a perpendicular bisector of the connecting line.
3. The centrally-mounted motor drive mechanism according to claim 2, characterized in that the perpendicular distance H1 from the primary drive shaft (300) to the connecting line ranges from 0mm to 30mm, and the perpendicular distance D1 from the primary drive shaft (300) to the perpendicular bisector of the connecting line ranges from 0mm to 30 mm.
4. The centrally-mounted motor drive mechanism according to claim 3, characterized in that the perpendicular distance H2 from the secondary drive shaft (400) to the line is in the range of 0mm to 30mm, which is equal to the perpendicular distance D2 from the secondary drive shaft (400) to the perpendicular bisector of the line, which is in the range of 0mm to 30 mm.
5. The centrally-mounted motor drive mechanism according to claim 4, characterized in that the perpendicular distance H1 from the primary drive shaft (300) to the line is 6mm, and the perpendicular distance D1 from the primary drive shaft (300) to the perpendicular bisector of the line is 10 mm.
6. The centrally-mounted motor drive mechanism according to claim 5, characterized in that the perpendicular distance H2 from the secondary drive shaft (400) to the line is 25mm, and the perpendicular distance D2 from the secondary drive shaft (400) to the perpendicular bisector of the line is 7 mm.
7. The centrally placed motor drive according to any of claims 1-6, characterized in that the first drive tooth (301) is located above the second drive tooth (302) and the third drive tooth (401) is located above the fourth drive tooth (402).
8. The centrally-mounted motor drive according to claim 7, characterized in that the first drive tooth (301), the second drive tooth (302), the third drive tooth (401) and the fourth drive tooth (402) are all helical teeth.
9. The centrally-mounted motor drive according to claim 7, characterized in that the first drive tooth (301) and the second drive tooth (302) have the same tooth orientation, the third drive tooth (401) and the fourth drive tooth (402) have the same tooth orientation, and the third drive tooth (401) has the opposite tooth orientation to the first drive tooth (301).
10. An electric power-assisted vehicle driving system, characterized by comprising a mid-motor (200), an output shaft (3) and the mid-motor transmission mechanism of any one of claims 1 to 9, wherein the mid-motor transmission mechanism is used for transmitting the power of the mid-motor (200) to the output shaft (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911061705.3A CN110758629A (en) | 2019-11-01 | 2019-11-01 | Middle-mounted motor transmission mechanism and electric moped driving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911061705.3A CN110758629A (en) | 2019-11-01 | 2019-11-01 | Middle-mounted motor transmission mechanism and electric moped driving system |
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| Publication Number | Publication Date |
|---|---|
| CN110758629A true CN110758629A (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911061705.3A Pending CN110758629A (en) | 2019-11-01 | 2019-11-01 | Middle-mounted motor transmission mechanism and electric moped driving system |
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| CN (1) | CN110758629A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114179959A (en) * | 2021-12-28 | 2022-03-15 | 常州洪记两轮智能交通工具有限公司 | Easy-to-dismount and convenient electric bicycle |
-
2019
- 2019-11-01 CN CN201911061705.3A patent/CN110758629A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114179959A (en) * | 2021-12-28 | 2022-03-15 | 常州洪记两轮智能交通工具有限公司 | Easy-to-dismount and convenient electric bicycle |
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Address after: No. 3 Gongye West Road, Songshan Lake Park, Dongguan City, Guangdong Province, 523000 Applicant after: Guangdong Gaobiao Intelligent Technology Co.,Ltd. Address before: No.3, Gongye West Road, Songshanhu high tech Industrial Development Zone, Dongguan City, Guangdong Province Applicant before: SHENZHEN GOBAO ELECTRONIC TECHNOLOGY Co.,Ltd. |
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