CN112224328A - Integrated electric power-assisted bicycle dual-drive assembly and installation method thereof - Google Patents

Integrated electric power-assisted bicycle dual-drive assembly and installation method thereof Download PDF

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Publication number
CN112224328A
CN112224328A CN202011084953.2A CN202011084953A CN112224328A CN 112224328 A CN112224328 A CN 112224328A CN 202011084953 A CN202011084953 A CN 202011084953A CN 112224328 A CN112224328 A CN 112224328A
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China
Prior art keywords
assembly
driving shaft
gear
power
assisted bicycle
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CN202011084953.2A
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Chinese (zh)
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徐花爱
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Individual
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Priority to CN202011084953.2A priority Critical patent/CN112224328A/en
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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
    • 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
    • B62M11/14—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears
    • 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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  • 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 provides an integrated dual-drive assembly of an electric power-assisted bicycle and an installation method thereof, wherein the dual-drive assembly comprises a base, a driving shaft, a chain wheel assembly, an electric motor, a gear transmission assembly and an auxiliary gear; the chain wheel assembly is connected with a driving shaft through a one-way clutch, and the driving shaft is provided with two pedals through a crank connecting rod to transmit pedal force to a driving wheel; an output shaft of the electric motor is connected with a gear transmission assembly, the gear transmission assembly is meshed with an auxiliary gear, the auxiliary gear is connected with a chain wheel assembly, the chain wheel assembly is connected with a driving shaft through a one-way clutch, and the power of the electric motor is transmitted to the driving shaft; the first bearing is arranged in the first shaft sleeve, the second bearing is arranged in the second shaft sleeve, and the first bearing and the second bearing are matched with the driving shaft and used for driving the driving shaft to work when the power-assisted bicycle moves forwards through pedal force and power of the electric motor. The invention has compact integral structure, small volume, high installation efficiency and strong applicability; the dual drive function can be realized.

Description

Integrated electric power-assisted bicycle dual-drive assembly and installation method thereof
Technical Field
The invention relates to the technical field of electromechanics, in particular to an integrated dual-drive assembly of an electric power-assisted bicycle and an installation method thereof.
Background
The electric power-assisted bicycle is provided with a motor by taking a battery as an auxiliary power source, is provided with a power auxiliary system, and is a novel vehicle capable of realizing integration of manual riding and motor power assistance. In the field of electric power-assisted bicycles, motor mounting positions are mainly divided into two types, one type is a middle type, namely a motor mounted in the middle position of a bicycle body, namely a motor in a five-way position, and the motor is called as a middle type motor. Put motor and connected to vehicle frame in to be connected and transmit power through chain and rear wheel, pedal is installed to the both sides of motor simultaneously, does not have under the condition of power at the motor, rides passerby and can realize through pedal that the manpower rides, and resistance and normal bicycle do not have the difference. Another type is mounted in the hub of a bicycle, called a hub motor. Compare in-wheel motor, put the motor and all have great advantage in aspects such as technique and performance. The structure and the installation method of the middle motor of the existing electric power-assisted bicycle still need to be further improved.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides an integrated electric power-assisted bicycle dual-drive assembly and an installation method thereof, which optimize the structural design and improve the installation efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
an integrated electric bicycle dual drive assembly, said dual drive assembly comprising: the device comprises a base, a driving shaft, a chain wheel assembly, an electric motor, a gear transmission assembly and an auxiliary gear; the chain wheel assembly is connected with the driving shaft through a one-way clutch, and the driving shaft is provided with two pedals through two crank connecting rods and transmits pedal force to the driving wheel; an output shaft of the electric motor is connected with a gear transmission assembly, the gear transmission assembly is meshed with an auxiliary gear, the auxiliary gear is connected with a chain wheel assembly through a connecting mechanism, and the chain wheel assembly is connected with the driving shaft through a one-way clutch so as to transmit the power of the electric motor to the driving shaft; the first bearing is fixed in the first shaft sleeve, is matched with the driving shaft and is used for driving the driving shaft to work when the power-assisted bicycle moves forwards through pedal force; the second bearing is fixed in the second shaft sleeve, is matched with the driving shaft and is used for driving the driving shaft to work when the power-assisted bicycle advances through the power of the electric motor; a third bushing, said third bushing being integrally formed with said base; and the first shaft sleeve and the second shaft sleeve are respectively and fixedly connected with two ends of the third shaft sleeve.
Preferably, the connecting means is a pin or a bolt installed through the auxiliary gear and the sprocket assembly in a thickness direction.
Preferably, the gear assembly comprises: a first gear that is linked with an output shaft of the electric motor; a second gear engaged with the first gear and used for speed reduction; a third gear coaxially connected with the second gear and engaged with the auxiliary gear.
Preferably, the sprocket assembly and the auxiliary gear are rotatably mounted on the base.
Preferably, the electric motor and the gear assembly are fixed to the base.
Preferably, the first shaft sleeve and the second shaft sleeve are fixedly connected with two ends of the third shaft sleeve through threads.
Preferably, the first bearing and the second bearing are needle bearings.
Preferably, the third shaft sleeve is positioned on one side of the base.
According to another aspect of the invention, the invention further provides an installation method of the integrated electric power-assisted bicycle dual-drive assembly, which comprises the following steps:
step S1: the auxiliary gear is coaxially connected with the chain wheel by using the connecting mechanism, the chain wheel and the auxiliary gear are installed on the driving shaft by using the one-way clutch, and the chain cover is coaxially connected with the chain wheel by using the screw; the connecting mechanism is a pin or a bolt, the auxiliary gear is arranged on the inner side of the chain wheel, and the chain cover is arranged on the outer side of the chain wheel;
step S2: the shaft sleeve of the middle motor is penetrated in a middle pipe of the power-assisted bicycle, so that the length of the threaded section of the driving shaft extending out of the middle pipe is more than or equal to 10 mm;
step S3: sleeving a fixed support on a shaft sleeve, wherein the toothed surface of the fixed support faces a middle pipe of the power-assisted bicycle, and the fixed support is tightly connected with a base of a middle motor by using 2M 6 x 10 drop-resistant screws;
step S4: the middle motor is pressed on the front fork of the moped with force, the pressure F is more than or equal to 5Kg, and two nuts are sequentially screwed on the outer side of the fixed bracket, so that the teeth of the fixed bracket are inserted into a middle tube of the moped, and the screwing force is 30-40 N.m;
step S5: two crank connecting rods are respectively installed at two ends of a driving shaft by utilizing inner hexagon screws of M8, and the screwing force is 35-40 N.m;
step S6: and a power line, an instrument line and a speed measuring line are connected.
Compared with the prior art, the invention has the beneficial effects that:
1. the electric motor and the gear transmission assembly are integrated in the shell of the base, the driving shaft is arranged in the shaft sleeve, the chain wheel assembly is connected with the driving shaft through the one-way clutch, the double-driving assembly is compact in overall structure and small in size, can be directly arranged on five-way pipes of various electric power-assisted bicycles, and is high in installation efficiency and applicability;
2. the first bearing is arranged in the first shaft sleeve, the second bearing is arranged in the second shaft sleeve, the first bearing and the second shaft sleeve are respectively and fixedly connected with two ends of the third shaft sleeve through threads, the third shaft sleeve and the base are integrally formed, and the first bearing and the second bearing are matched with the driving shaft and can be respectively used for driving the driving shaft to work when the power-assisted bicycle moves forwards through pedal force and power of the electric motor, so that a dual-driving function is realized;
3. the chain wheel assembly is connected with the driving shaft through the one-way clutch, and two pedals are mounted at two ends of the driving shaft through two crank connecting rods, so that pedal force driving can be realized; the auxiliary gear is connected with the chain wheel component through a connecting mechanism, and the electric power of the electric motor is transmitted to the chain wheel component through the gear transmission component and the auxiliary gear, so that electric drive can be realized; because the one-way clutch only transmits power in one way, when the electric motor works to generate electric power, the one-way clutch completes the power transmission of the electric power to the auxiliary gear and the chain wheel assembly in one way, and when the electric motor does not work, the one-way clutch can not transmit the power from the chain wheel assembly and the auxiliary gear to the gear transmission assembly and the electric motor in reverse direction, thereby ensuring the smooth operation of the dual-drive assembly under the effect of realizing the dual-drive function.
Drawings
FIG. 1 is a front view of an integrated electric bicycle dual drive assembly according to embodiment 1 of the present invention;
FIG. 2 is a simplified structural diagram of an integrated electric bicycle dual-drive assembly according to embodiment 1 of the present invention;
fig. 3 is a simplified structural schematic diagram of a shaft sleeve, a bearing and a driving shaft of an integrated dual-drive assembly of an electric power-assisted bicycle according to embodiment 1 of the present invention;
FIG. 4 is a perspective view of a driving shaft of the integrated dual driving assembly of the electric bicycle according to embodiment 1 of the present invention;
fig. 5 is an exploded view of an assembly structure of an integrated electric bicycle dual-drive assembly according to embodiment 1 of the present invention.
In the figure, 100-double drive assembly, 10-base, 20-drive shaft, 21-bearing mounting section, 22-threaded section, 23-one-way clutch mounting section, 30-sprocket assembly, 31-sprocket, 32-chain cover, 40-electric motor, 50-gear transmission assembly, 51-first gear, 52-second gear, 53-third gear, 60-auxiliary gear, 70-one-way clutch, 80-crank connecting rod, 90-connecting mechanism, 101-first shaft sleeve, 102-second shaft sleeve, 103-third shaft sleeve, 104-nut, 105-fixed support, 106-first bearing, 107-second bearing.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
Referring to fig. 1 to 5, fig. 1 is a front view of an integrated electric bicycle dual-drive assembly according to embodiment 1 of the present invention; FIG. 2 is a simplified structural diagram of an integrated electric bicycle dual-drive assembly according to embodiment 1 of the present invention; fig. 3 is a simplified structural schematic diagram of a shaft sleeve, a bearing and a driving shaft of an integrated dual-drive assembly of an electric power-assisted bicycle according to embodiment 1 of the present invention; FIG. 4 is a perspective view of a driving shaft of the integrated dual driving assembly of the electric bicycle according to embodiment 1 of the present invention; fig. 5 is an exploded view of an assembly structure of an integrated electric bicycle dual-drive assembly according to embodiment 1 of the present invention.
The integrated dual drive assembly 100 for the electric power-assisted bicycle comprises a base 10, a driving shaft 20, a chain wheel assembly 30, an electric motor 40, a gear transmission assembly 50 and an auxiliary gear 60. Wherein, the chain wheel assembly 30 is connected with the driving shaft 20 through the one-way clutch 70, and two pedals (not shown in the figure) are installed at both ends of the driving shaft 20 through two crank connecting rods 80 for transmitting the pedaling force to the driving wheel (the rear wheel of the power-assisted bicycle); the dual-drive assembly 100 of the present invention is installed on the power-assisted bicycle in a central manner, i.e., in the middle of the power-assisted bicycle, the chain wheel assembly 30 is connected with the driving wheel by a chain, when a rider applies a pedaling force to pedals on both sides, the pedaling force is transmitted to the driving shaft 20 from the crank connecting rods 80 on both sides and then transmitted to the chain wheel assembly 30, and the chain wheel assembly 30 rotates and drives the driving wheel to rotate by the chain, thereby realizing the function of driving the power-assisted bicycle by the pedaling force.
Referring to fig. 2, the output shaft of the electric motor 40 is connected to the gear transmission assembly 50, the gear transmission assembly 50 is engaged with the auxiliary gear 60, the auxiliary gear 60 is connected to the sprocket assembly 30 through the connecting mechanism 90, and the sprocket assembly 30 is connected to the driving shaft 20 through the one-way clutch 70, so that the power of the electric motor 40 is transmitted to the driving shaft 20; since the gear transmission assembly 50 is engaged with the auxiliary gear 60, and the auxiliary gear 60 is connected with the sprocket assembly 30 through the connecting mechanism 90, when the electric motor 40 operates, the output shaft thereof transmits the electric power to the gear transmission assembly 50, the gear transmission assembly 50 transmits the electric power to the auxiliary gear 60 and the sprocket assembly 30, and the sprocket assembly 30 transmits the electric power to the driving wheel through the chain, thereby realizing the function of electrically driving the power-assisted bicycle.
The one-way clutch is a component for one-way power transmission, and since the sprocket assembly 30 is connected to the drive shaft 20 through the one-way clutch 70 and to the auxiliary gear 60 through the connecting mechanism 90, and the sprocket assembly 30 and the auxiliary gear 60 rotate coaxially and synchronously, when the electric motor 40 operates to generate electromotive force, the one-way clutch 70 completes the power transmission of the electromotive force to the auxiliary gear 60 and the sprocket assembly 30 in one way, and when the electric motor 40 does not operate, the one-way clutch 70 does not perform the power transmission from the sprocket assembly 30 and the auxiliary gear 60 to the gear transmission assembly 50 and the electric motor 40 in the reverse direction, thereby ensuring smooth operation of the dual drive assembly 100 under the effect of realizing the dual drive function.
Referring to fig. 2 to 4, the driving shaft 20 is installed in three shaft sleeves, and the first bearing 106 is fixed in the first shaft sleeve 101, and is matched with the driving shaft 20, for driving the driving shaft 20 to work when the power-assisted bicycle moves forward by the pedal force; the second bearing 107 is fixed in the second sleeve 102, is matched with the driving shaft 20 and is used for driving the driving shaft 20 to work when the moped moves forwards through the power of the electric motor 40; the third shaft sleeve 103 is located at one side of the base 10, the third shaft sleeve 103 is integrally formed with the base 10, and the first shaft sleeve 101 and the second shaft sleeve 102 are respectively fixedly connected with two ends of the third shaft sleeve 103.
Referring to fig. 4, the driving shaft 20 has a bearing mounting section 21, a threaded section 22 and a one-way clutch mounting section 23, the bearing mounting section 21 has two sections, and the two bearing mounting sections 21 are arranged at intervals and respectively matched with the structures of the first bearing 106 and the second bearing 107; the threaded section 22 and the one-way clutch mounting section 23 are respectively positioned at two ends of the driving shaft 20, and the threaded section 22 is used for fixedly mounting the driving shaft 20 on the power-assisted bicycle; the one-way clutch mounting section 23 is used to mount the sprocket assembly 30 on the drive shaft 20 using the one-way clutch 70.
In one embodiment, the first shaft sleeve 101 and the second shaft sleeve 102 are fixedly connected with both ends of the third shaft sleeve 103 through threads. When the shaft sleeve, the bearing and the driving shaft are installed, the first bearing 106 can be pressed into the first shaft sleeve 101, the second bearing 107 can be pressed into the second shaft sleeve 102, then the first shaft sleeve 101 and the second shaft sleeve 102 are respectively connected to two ends of the third shaft sleeve 103 in a threaded manner, and finally the driving shaft 20 is inserted into the three shaft sleeves, so that the first bearing 106 and the second bearing 107 are respectively matched with the two bearing installation sections 21 of the driving shaft 20; the first shaft sleeve 101 and the second shaft sleeve 102 may be first screwed to the two ends of the third shaft sleeve 103, and then the first bearing 106 and the second bearing 107 may be assembled to the driving shaft 20 and finally inserted into the three shaft sleeves together with the driving shaft 20. When the power-assisted bicycle is driven to move forward by the pedaling force and the power of the electric motor 40, the driving shaft 20 can smoothly run in the bushing due to the two bearings.
Preferably, the first bearing 106 and the second bearing 107 are needle bearings. The needle bearing has a compact radial structure and high load bearing capacity, contributes to integration and miniaturization of the dual drive assembly 100, and contributes to prolonging the service life of the dual drive assembly 100.
In one embodiment, the connecting mechanism 90 is a pin or bolt, and the connecting mechanism 90 is installed through the auxiliary gear 60 and the sprocket assembly 30 in the thickness direction to coaxially connect the auxiliary gear 60 and the sprocket assembly 30, and the auxiliary gear 60 and the sprocket assembly 30 can be rotated in synchronization.
Preferably, referring to fig. 2, the gear assembly 50 includes: a first gear 51 linked with an output shaft of the electric motor 40; a second gear 52 which is meshed with the first gear 51 and is used for speed reduction; and a third gear 53 coaxially connected with the second gear 52 and meshed with the auxiliary gear 60. When the electric motor 40 operates, the output shaft thereof transmits electric power to the first gear 51, the second gear 52, the third gear 53, the auxiliary gear 60 and the sprocket assembly 30 in order, thereby realizing the function of electrically driving the power-assisted bicycle.
Preferably, the sprocket assembly 30 and the auxiliary gear 60 are rotatably mounted on the base 10; the electric motor 40 and the gear assembly 50 are fixed to the base 10. The electric motor 40 and the gear transmission assembly 50 are integrated inside the housing of the base 10, and the dual drive assembly 100 is small in overall size, which contributes to integration and miniaturization. The base 10, the shaft sleeve, the driving shaft 20, the electric motor 40 and the gear transmission assembly 50 are integrated into a middle-mounted motor, so that the whole structure is compact, and the installation is convenient.
In the preferred embodiment of the present invention, the sprocket assembly 30 comprises a sprocket 31 and a chain cover 32, and the chain cover 32 is coaxially mounted on the outer side of the sprocket 31 by screws, so as to play a role of protection and ensure riding safety.
Referring to fig. 1 and 5, the dual-drive assembly 100 further includes two nuts 104 and a fixing bracket 105, and the two nuts 104 and the fixing bracket 106 are disposed at one end of the driving shaft 20 corresponding to the threaded section 22, for mounting the dual-drive assembly 100 on the power-assisted bicycle.
Referring to fig. 1 to 5, an installation method of an integrated electric bicycle dual-drive assembly according to embodiment 1 of the present invention is as follows:
step S1: the auxiliary gear 60 is coaxially connected to the sprocket 31 by the connecting mechanism 90, the sprocket 31 and the auxiliary gear 60 are attached to the drive shaft 20 by the one-way clutch 70, and the chain cover 32 is coaxially connected to the sprocket 31 by a screw; wherein, the connecting mechanism 90 is a pin or a bolt, the auxiliary gear 60 is arranged at the inner side of the chain wheel 31, and the chain cover 32 is arranged at the outer side of the chain wheel 31;
step S2: the shaft sleeve of the middle motor is penetrated in a middle pipe of the power-assisted bicycle, and the length of the threaded section 22 of the driving shaft 20 extending out of the middle pipe is ensured to be more than or equal to 10 mm;
step S3: sleeving a fixed support 105 on a shaft sleeve, wherein the toothed surface of the fixed support 105 faces a middle pipe of the power-assisted bicycle, and the fixed support 105 is tightly connected with a base 10 of a middle-arranged motor by using 2M 6 x 10 drop-resistant screws;
step S4: the middle motor is pressed on the front fork of the moped with force, the pressure F is more than or equal to 5Kg, and two nuts 104 are sequentially screwed on the outer side of the fixed bracket 105, so that the teeth of the fixed bracket 105 are inserted into a middle tube of the moped, and the screwing force is 30-40 N.m; wherein the two nuts 104 are of type M33;
step S5: two crank connecting rods 80 are respectively installed at two ends of the driving shaft 20 by using inner hexagon screws of M8, and the screwing force is 35-40 N.m;
step S6: and a power line, an instrument line and a speed measuring line are connected.
In summary, the application provides an integrated dual-drive assembly of an electric power-assisted bicycle, an electric motor and a gear transmission assembly are integrated in a shell of a base, a drive shaft is installed in a shaft sleeve, the shaft sleeve and the base are integrally formed, a chain wheel assembly is connected with the drive shaft through a one-way clutch, the dual-drive assembly is compact in overall structure and small in size, can be directly installed on five-way pipes of various electric power-assisted bicycles by utilizing the shaft sleeve, and is high in installation efficiency and high in applicability; the driving shaft is arranged in the shaft sleeve, and the shaft sleeve is internally provided with two bearings which can be used for driving the driving shaft to work when the power-assisted bicycle moves forward through pedal force and power of the electric motor, so that a dual-driving function is realized; the chain wheel assembly is connected with the driving shaft through the one-way clutch, and two pedals are mounted at two ends of the driving shaft through two crank connecting rods, so that pedal force driving can be realized; the auxiliary gear is connected with the chain wheel component through a connecting mechanism, and the electric power of the electric motor is transmitted to the chain wheel component through the gear transmission component and the auxiliary gear, so that electric drive can be realized; because the one-way clutch only transmits power in one way, when the electric motor works to generate electric power, the one-way clutch completes the power transmission of the electric power to the auxiliary gear and the chain wheel assembly in one way, and when the electric motor does not work, the one-way clutch can not transmit the power from the chain wheel assembly and the auxiliary gear to the gear transmission assembly and the electric motor in reverse direction, thereby ensuring the smooth operation of the dual-drive assembly under the effect of realizing the dual-drive function.
The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.

Claims (9)

1. The utility model provides an integrated form electric bicycle dual drive subassembly which characterized in that: the dual drive assembly comprises: the device comprises a base, a driving shaft, a chain wheel assembly, an electric motor, a gear transmission assembly and an auxiliary gear; wherein the content of the first and second substances,
the chain wheel assembly is connected with the driving shaft through a one-way clutch, and the driving shaft is provided with two pedals through two crank connecting rods to transmit pedal force to the driving wheel;
an output shaft of the electric motor is connected with a gear transmission assembly, the gear transmission assembly is meshed with an auxiliary gear, the auxiliary gear is connected with a chain wheel assembly through a connecting mechanism, and the chain wheel assembly is connected with the driving shaft through a one-way clutch so as to transmit the power of the electric motor to the driving shaft;
the first bearing is fixed in the first shaft sleeve, is matched with the driving shaft and is used for driving the driving shaft to work when the power-assisted bicycle moves forwards through pedal force;
the second bearing is fixed in the second shaft sleeve, is matched with the driving shaft and is used for driving the driving shaft to work when the power-assisted bicycle advances through the power of the electric motor;
a third bushing, said third bushing being integrally formed with said base; and the first shaft sleeve and the second shaft sleeve are respectively and fixedly connected with two ends of the third shaft sleeve.
2. The integrated dual drive assembly for an electric power-assisted bicycle according to claim 1, wherein: the connecting mechanism is a pin or a bolt, and penetrates through the auxiliary gear and the sprocket wheel assembly along the thickness direction to be installed.
3. The integrated dual drive assembly for an electric power-assisted bicycle according to claim 1, wherein: the gear transmission assembly includes: a first gear that is linked with an output shaft of the electric motor; a second gear engaged with the first gear and used for speed reduction; a third gear coaxially connected with the second gear and engaged with the auxiliary gear.
4. The integrated dual drive assembly for an electric power-assisted bicycle according to claim 1, wherein: the sprocket assembly and the auxiliary gear are rotatably mounted on the base.
5. The integrated dual drive assembly for an electric power-assisted bicycle according to claim 1, wherein: the electric motor and the gear transmission assembly are fixed on the base.
6. The integrated dual drive assembly for an electric power-assisted bicycle according to claim 1, wherein: the first shaft sleeve and the second shaft sleeve are fixedly connected with two ends of the third shaft sleeve through threads.
7. The integrated dual drive assembly for an electric power-assisted bicycle according to claim 1, wherein: the first bearing and the second bearing are needle roller bearings.
8. The integrated dual drive assembly for an electric power-assisted bicycle according to claim 1, wherein: the third shaft sleeve is positioned on one side of the base.
9. The installation method of the integrated dual-drive assembly of the electric power-assisted bicycle is characterized in that: the method comprises the following steps:
step S1: the auxiliary gear is coaxially connected with the chain wheel by using the connecting mechanism, the chain wheel and the auxiliary gear are installed on the driving shaft by using the one-way clutch, and the chain cover is coaxially connected with the chain wheel by using the screw; the connecting mechanism is a pin or a bolt, the auxiliary gear is arranged on the inner side of the chain wheel, and the chain cover is arranged on the outer side of the chain wheel;
step S2: the shaft sleeve of the middle motor is penetrated in a middle pipe of the power-assisted bicycle, so that the length of the threaded section of the driving shaft extending out of the middle pipe is more than or equal to 10 mm;
step S3: sleeving a fixed support on a shaft sleeve, wherein the toothed surface of the fixed support faces a middle pipe of the power-assisted bicycle, and the fixed support is tightly connected with a base of a middle motor by using 2M 6 x 10 drop-resistant screws;
step S4: the middle motor is pressed on the front fork of the moped with force, the pressure F is more than or equal to 5Kg, and two nuts are sequentially screwed on the outer side of the fixed bracket, so that the teeth of the fixed bracket are inserted into a middle tube of the moped, and the screwing force is 30-40 N.m;
step S5: two crank connecting rods are respectively installed at two ends of a driving shaft by utilizing inner hexagon screws of M8, and the screwing force is 35-40 N.m;
step S6: and a power line, an instrument line and a speed measuring line are connected.
CN202011084953.2A 2020-10-12 2020-10-12 Integrated electric power-assisted bicycle dual-drive assembly and installation method thereof Withdrawn CN112224328A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011084953.2A CN112224328A (en) 2020-10-12 2020-10-12 Integrated electric power-assisted bicycle dual-drive assembly and installation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011084953.2A CN112224328A (en) 2020-10-12 2020-10-12 Integrated electric power-assisted bicycle dual-drive assembly and installation method thereof

Publications (1)

Publication Number Publication Date
CN112224328A true CN112224328A (en) 2021-01-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011084953.2A Withdrawn CN112224328A (en) 2020-10-12 2020-10-12 Integrated electric power-assisted bicycle dual-drive assembly and installation method thereof

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Country Link
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