CN213705697U - Integrated dual-drive assembly of electric power-assisted bicycle - Google Patents
Integrated dual-drive assembly of electric power-assisted bicycle Download PDFInfo
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- CN213705697U CN213705697U CN202022256054.8U CN202022256054U CN213705697U CN 213705697 U CN213705697 U CN 213705697U CN 202022256054 U CN202022256054 U CN 202022256054U CN 213705697 U CN213705697 U CN 213705697U
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Abstract
The utility model provides an integrated electric power-assisted bicycle dual-drive assembly, which comprises a base, a drive 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 two crank connecting rods and transmits 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 through a connecting mechanism, 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 driving shaft is arranged in the shaft sleeve, and the shaft sleeve is internally provided with two bearings for driving the driving shaft to work when the power-assisted bicycle moves forwards through pedal force and power of the electric motor; and the shaft sleeve and the base are integrally formed. The utility model has compact integral structure, small volume, high installation efficiency and strong applicability; the dual drive function can be realized.
Description
Technical Field
The utility model relates to an electromechanical technical field especially relates to an integrated form electric bicycle dual drive assembly.
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.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the shortcoming that exists among the prior art, and the electronic power assisted bicycle dual drive subassembly of integrated form that proposes optimizes structural design, improves the installation effectiveness.
In order to achieve the above purpose, the utility model 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 driving shaft is arranged in a shaft sleeve, and two bearings are arranged in the shaft sleeve and used for driving the driving shaft to work when the power-assisted bicycle advances through pedal force and power of the electric motor; and the shaft sleeve and the base are integrally formed.
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 two bearings in the shaft sleeve are directly pressed into the shaft sleeve, and then the driving shaft is directly inserted into the shaft sleeve.
Preferably, the two bearings are assembled with the driving shaft and then inserted into the shaft sleeve together with the driving shaft.
Preferably, a positioning step for limiting the mounting position of the bearing is arranged in the shaft sleeve.
Preferably, the bearing is a needle bearing.
Preferably, the shaft sleeve is positioned on one side of the base.
Compared with the prior art, the beneficial effects of the utility model are 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 shaft sleeve and the base are integrally formed, the chain wheel assembly is connected with the driving shaft through the one-way clutch, the double-drive assembly is compact in overall structure and small in size, can be directly arranged on five-way pipes of various electric power-assisted bicycles by utilizing the shaft sleeve, and is high in installation efficiency and applicability;
2. 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;
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 power-assisted bicycle dual-drive assembly according to embodiment 1 of the present invention;
fig. 2 is a simplified structural schematic diagram of an integrated electric power-assisted 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 in 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 in an integrated dual driving assembly of an electric bicycle according to embodiment 1 of the present invention;
fig. 5 is an exploded view of an assembly structure of an integrated dual-drive assembly of an electric bicycle according to embodiment 1 of the present invention.
In the figure, 100-double drive assembly, 10-base, 20-drive shaft, 21-bearing installation section, 22-thread section, 23-one-way clutch installation 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-shaft sleeve, 102-bearing, 103-positioning step, 104-nut, 105-fixed support.
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 power-assisted bicycle dual-drive assembly according to embodiment 1 of the present invention; fig. 2 is a simplified structural schematic diagram of an integrated electric power-assisted 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 in 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 in an integrated dual driving assembly of an electric bicycle according to embodiment 1 of the present invention; fig. 5 is an exploded view of an assembly structure of an integrated dual-drive assembly of an electric bicycle according to embodiment 1 of the present invention.
The utility model discloses an integrated form electric bicycle dual drive assembly 100 includes base 10, drive shaft 20, sprocket assembly 30, electric motor 40, gear drive assembly 50 and 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 utility model discloses a dual drive subassembly 100 is installed on moped with middle-placed mode, installs in moped's intermediate position promptly, is connected with the chain between sprocket assembly 30 and the drive wheel, when riding passerby and applying pedal force to the running-board of both sides, pedal force transmits for drive shaft 20 from the crank connecting rod 80 of both sides, and the retransmission gives sprocket assembly 30, and sprocket assembly 30 is rotatory and drives the drive wheel through the chain and rotate, realizes pedal force drive moped's function.
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 the shaft sleeve 101, and both ends of the driving shaft 20 extend out of the shaft sleeve 101; two bearings 102 are provided in the shaft housing 101 for driving the operation of the driving shaft 20 when the assisted bicycle is advanced by the pedaling force and the power of the electric motor 40; the boss 101 is located at one side of the base 10, and the boss 101 is integrally formed with the base 10.
Referring to fig. 4, the driving shaft 20 has a bearing installation section 21, a threaded section 22 and a one-way clutch installation section 23, the bearing installation section 21 has two sections, the two sections of bearing installation sections 21 are arranged at intervals and are respectively used for installing two bearings 102, and the structure of the bearing installation section 21 is matched with that of the bearing 102; 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.
Referring to fig. 2 and fig. 3, the shaft sleeve 101 is a hollow structure, the driving shaft 20 is rotatably disposed in the shaft sleeve 101 through two bearings 102, and the axis of the driving shaft 20 coincides with the axis of the shaft sleeve 101; the inner wall of the shaft sleeve 101 is provided with a positioning step 103 for limiting the installation position of the bearing 102, and the positioning step has positioning and guiding effects when the bearing 102 is installed, so that the installation efficiency can be improved, and the positioning accuracy is guaranteed. When the two bearings 102 and the driving shaft 20 are installed in the shaft sleeve 101, the two bearings 102 may be pressed into corresponding positions in the shaft sleeve 101, and then the driving shaft 20 is inserted into the shaft sleeve 101; it is also possible to assemble the two bearings 102 with the drive shaft 20 and then insert them into the sleeve 101 together with the drive 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 101 due to the two bearings 102.
Preferably, the bearing 102 is a needle bearing. 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 101, the driving shaft 20, the electric motor 40 and the gear transmission assembly 50 are integrated into a middle motor, so that the whole structure is compact, and the installation is convenient.
The utility model discloses a preferred embodiment, sprocket assembly 30 includes sprocket 31 and chain cover 32, and chain cover 32 plays the guard action through screw coaxial arrangement in the outside of sprocket 31 for the guarantee safety of riding.
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 dual-drive assembly of an electric bicycle 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: a shaft sleeve 101 of a middle-mounted motor is penetrated in a middle tube of the power-assisted bicycle, and the length of a threaded section 22 of a driving shaft 20 extending out of the middle tube is more than or equal to 10 mm;
step S3: sleeving a fixing support 105 on a shaft sleeve 101, wherein the toothed surface of the fixing support 105 faces a middle pipe of the power-assisted bicycle, and 2M 6-10 drop-resistant screws are used for locking and connecting the fixing support 105 with a base 10 of a middle-placed motor;
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 examples for implementing the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, all changes and modifications which do not depart from the spirit and scope of the present invention are deemed to fall within the scope of the present invention.
Claims (10)
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 driving shaft is arranged in a shaft sleeve, and two bearings are arranged in the shaft sleeve and used for driving the driving shaft to work when the power-assisted bicycle advances through pedal force and power of the electric motor; and the shaft sleeve and the base are integrally formed.
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 two bearings in the shaft sleeve are directly pressed into the shaft sleeve firstly, and then the driving shaft is directly inserted into the shaft sleeve.
7. The integrated dual drive assembly for an electric power-assisted bicycle according to claim 1, wherein: the two bearings are assembled with the driving shaft and then inserted into the shaft sleeve together with the driving shaft.
8. The integrated dual drive assembly for an electric power-assisted bicycle according to claim 1, wherein: and a positioning step for limiting the mounting position of the bearing is arranged in the shaft sleeve.
9. The integrated dual drive assembly for an electric power-assisted bicycle according to claim 1, wherein: the bearing is a needle bearing.
10. The integrated dual drive assembly for an electric power-assisted bicycle according to claim 1, wherein: the shaft sleeve is positioned on one side of the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022256054.8U CN213705697U (en) | 2020-10-12 | 2020-10-12 | Integrated dual-drive assembly of electric power-assisted bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022256054.8U CN213705697U (en) | 2020-10-12 | 2020-10-12 | Integrated dual-drive assembly of electric power-assisted bicycle |
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| CN213705697U true CN213705697U (en) | 2021-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022256054.8U Active CN213705697U (en) | 2020-10-12 | 2020-10-12 | Integrated dual-drive assembly of electric power-assisted bicycle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023236046A1 (en) * | 2022-06-07 | 2023-12-14 | Chan Yuk Chun Jon | Power-assisted drive assembly |
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2020
- 2020-10-12 CN CN202022256054.8U patent/CN213705697U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023236046A1 (en) * | 2022-06-07 | 2023-12-14 | Chan Yuk Chun Jon | Power-assisted drive assembly |
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