CN214875371U - Driving mechanism for electric bicycle - Google Patents

Abstract

A kind of driving mechanism for electric bicycle, there are unidirectional gears, drivers, and the output end of the driver is fitted with the drive shaft tooth a, the unidirectional gear is connected with drive shaft tooth a through the drive shaft tooth b, drive crank and unidirectional gear spline connection, the part is few, simple in construction, with low costs, the overall structure is compact, avoid the spare part is not hard up to appear the noise, this kind of structure is that the driver transmits the force to the drive crank directly, does not need to pass the moment main axis, avoid the output loss, the moment main axis is used as the tie rod only, has reduced the mechanical constraint, it is more laborsaving to trample the main foot end; the transmission shaft tooth b realizes two-stage transmission, and reduces the pressure of a driver acting on a driving crank; the chain transmission is not used, so that the energy loss caused by the chain transmission is reduced, and the maintenance problems caused by chain blockage, chain hanging and the like can also be reduced; the original installation mode of the fluted disc is not changed during use, the installation, the maintenance and the replacement are convenient and quick, and the replacement cost is low.

Description

Driving mechanism for electric bicycle

Technical Field

The utility model relates to an electric bicycle technical field especially relates to an actuating mechanism for electric bicycle.

Background

The electric bicycle is a novel vehicle and can realize the integration of manual riding and motor-assisted driving. The existing driving mechanism for the electric bicycle usually drives a torque main shaft to rotate by using a fluted disc at an output shaft of a motor, and then drives a crank to rotate by using the torque main shaft to realize the advancing of the bicycle, the transmission mode is to indirectly transmit power to a crank position serving as advancing main power, so the output energy of a driving machine cannot be utilized to the maximum extent, and energy loss is caused; in addition, in order to ensure the stability of the mechanical structure, the conventional driving mechanism is generally provided with a plurality of gears for transmission, and some gears are used for transmitting a fluted disc arranged on a torque main shaft by using a chain, so that the whole mechanism has more parts, complex structure, high cost and resource waste.

Disclosure of Invention

According to above technical problem, the utility model provides a actuating mechanism for electric bicycle, its characterized in that includes drive assembly, drive unit, moment axis, driven crank, the drive unit output is connected with drive assembly, the drive assembly center is connected with driven crank through the moment axis, the moment axis transversely sets up, the moment axis sets up at the drive unit upside.

The driving unit is installed on a frame of the bicycle, and the transmission assembly and the driven crank are respectively located on the left side and the right side of the frame of the bicycle.

The transmission assembly comprises a driving crank, a cover plate, a one-way gear and a torque middle shaft, wherein the one-way gear is installed in the cover plate, the driving crank is arranged at the outer end of the cover plate, the inner side of the upper end of the driving crank extends to the center of the one-way gear and is connected with the one-way gear through a spline, the driving crank is connected with the cover plate through a bearing, and a mounting hole is formed in the center of the upper end of the driving crank; the cover plate is arranged on the vehicle body;

the driving unit comprises a shell, a controller, a driving machine, transmission shaft teeth a and transmission shaft teeth b, the controller, the driving machine, the transmission shaft teeth a and the transmission shaft teeth b are all installed inside the shell, the controller is connected with the driving machine, the transmission shaft teeth a are sleeved at the output end of the driving machine, and the transmission shaft teeth b are connected to the upper side of the transmission shaft teeth a in a meshed mode; the transmission shaft teeth b are fixed in the shell through a rotating shaft;

and the transmission shaft teeth b are meshed and connected with a one-way gear of the transmission assembly.

Furthermore, one end part of the moment middle shaft is fixed at a mounting hole in the center of the upper end of the driving crank.

Further, the driving machine comprises a housing, a stator coil, a rotor and a driving shaft, wherein the stator coil is arranged outside the rotor, the housing is arranged outside the stator coil, and the driving shaft is arranged at a middle shaft of the rotor; the transmission shaft teeth a are sleeved on the driving shaft.

The utility model has the advantages that: the utility model discloses be provided with the driving machine, and the output cover of driving machine is equipped with transmission shaft tooth a, install one-way gear in the apron, one-way gear passes through transmission shaft tooth b and is connected with transmission shaft tooth a, simultaneously with driving crank and one-way gear splined connection, and make driving crank and apron rotate and be connected, this kind of structure is driving machine direct with power transmission to driving crank, need not to pass through the moment main shaft, avoid output loss, can provide bigger thrust-weight ratio, guarantee that the energy is utilized by the maximize, and the moment main shaft at this moment only uses as the connecting rod, drive driven crank through the moment main shaft and just can realize bicycle marching, mechanical constraint has been reduced on the moment main shaft, and the running-board on the driven crank at this moment is as the main foot end, therefore more laborsaving when trampling the main foot end;

meanwhile, in order to ensure the mechanical stability, the mechanical stability-guaranteeing mechanism comprises a one-way gear which is clamped in a cover plate and used for driving a crank to rotate, transmission shaft teeth a which are sleeved at the output end of a driving machine, and transmission shaft teeth b which are connected between the one-way gear and the transmission shaft teeth a, and has the advantages of few parts, simple structure, low cost, resource waste reduction, compact integral structure, avoidance of part loosening and noise generation, and convenience in part replacement and maintenance; the transmission shaft tooth b can realize secondary transmission, so that the pressure of a driving machine acting on a driving crank is reduced, the bicycle is ensured to travel more stably, in addition, chain transmission is not used, the energy loss caused by chain transmission can be reduced, and the maintenance problems caused by chain blockage, chain hanging and the like can also be reduced;

this application will take the initiative crank upper end inboard extend set up and with one-way gear splined connection, install the unidirectional gear again and can use on the automobile body of bicycle after installing in the apron, each part components of a whole that can function independently sets up, convenient manufacturing, and need not to destroy or modify original non-electric bicycle's geometrical structure and ergonomic mounting means, high durability and convenient use, when needs dismantle maintenance or change, only need to dismantle the apron and just can dismantle unidirectional gear or initiative crank, it is convenient to change, and swiftly, and only need change to damaging single part, the change cost is few.

Drawings

FIG. 1 is a sectional view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the present invention when mounted on a vehicle frame;

FIG. 3 is a schematic view of the connection structure of the transmission shaft teeth a, the transmission shaft teeth b, the one-way gear and the cover plate of the present invention;

fig. 4 is a side sectional view of the present invention, which does not include a driver and a controller.

As shown in the figure: 1. a driving crank; 1-1, mounting holes; 2. a cover plate; 3. a one-way gear; 4. a frame; 5. a moment middle axis; 6. a housing; 7. a stator coil; 8. a rotor; 9. a transmission shaft tooth a; 9-1, a driving shaft; 10. A transmission shaft tooth b; 10-1, a rotating shaft; 11. a controller; 12. a housing; 13. a drive unit; 14. a transmission assembly; 15. a bearing; 16. a spline.

Detailed Description

Example 1

The utility model provides a actuating mechanism for electric bicycle, its characterized in that includes drive assembly 14, drive unit 13, moment axis 5, driven crank, and drive unit 13 output is connected with drive assembly 14, and drive assembly 14 center is connected with driven crank through moment axis 5, and moment axis 5 transversely sets up, and moment axis 5 sets up at drive unit 13 upside.

The driving unit 13 is mounted on the frame 4 of the bicycle, and the transmission assembly 14 and the driven crank are respectively positioned at the left side and the right side of the frame 4 of the bicycle.

The transmission assembly 14 comprises a driving crank 1, a cover plate 2, a one-way gear 3 and a moment middle shaft 5, wherein the one-way gear 3 is installed in the cover plate 2, the driving crank 1 is fixed at the outer end of the cover plate 2, the inner side of the upper end position of the driving crank 1 extends to the center of the one-way gear 3 and is connected with a spline 16 of the one-way gear 3, the driving crank 1 is connected with the cover plate 2 through a bearing 15, and the center of the upper end position of the driving crank 1 is provided with a mounting hole 1-1; the cover plate 2 is arranged on the vehicle body;

the driving unit 13 comprises a shell 12, a controller 11, a driving machine, transmission shaft teeth a9 and transmission shaft teeth b10, wherein the controller 11, the driving machine, the transmission shaft teeth a9 and the transmission shaft teeth b10 are all installed inside the shell 12, the controller 11 is connected with the driving machine, the transmission shaft teeth a9 are sleeved at the output end of the driving machine, and the transmission shaft teeth b10 are connected to the upper side of the transmission shaft teeth a9 in a meshing manner; the transmission shaft tooth b10 is fixed in the shell 12 through the rotating shaft 10-1;

the transmission shaft tooth b10 is in meshed connection with the one-way gear 3 of the transmission assembly 14.

Furthermore, one end part of the moment middle shaft 5 is fixed at the mounting hole 1-1 at the center of the upper end position of the driving crank 1.

Further, the driving machine comprises a housing 6, a stator coil 7, a rotor 8 and a driving shaft 9-1, wherein the stator coil 7 is arranged outside the rotor 8, the housing 6 is arranged outside the stator coil 7, and the driving shaft 9-1 is arranged at the middle shaft of the rotor 8; the transmission shaft tooth a9 is sleeved on the driving shaft 9-1.

Example 2

When using the utility model discloses the time, install the running-board in driving crank 1 and driven crank outer end respectively, later through 11 control driving machine works of controller, its drive shaft 9-1 rotates and then drives transmission shaft tooth a9 and rotates in the driving machine working process, later transmission shaft tooth a9 drives transmission shaft tooth b10 and rotates, drive the one-way gear 3 rotation rather than the meshing is connected when transmission shaft tooth b10 rotates, one-way gear 3 drives driving crank 1 through spline 16 this moment, and bearing 15 follows driving crank 1 and rotates this moment, install simultaneously and also follow driving crank 1 and rotate in the moment axis 5 of the mounting hole 1-1 department at driving crank 1 upper end position center, thereby drive driven crank and rotate, electric bicycle can advance this moment.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. The utility model discloses each part that mentions is the common technique in prior art, and the technical personnel of this trade should understand, the utility model discloses do not receive the restriction of above-mentioned embodiment, the description only is the explanation in above-mentioned embodiment and the description the principle of the utility model, under the prerequisite that does not deviate from the spirit and the scope of the utility model, the utility model discloses still can have various changes and improvement, these changes and improvement all fall into the protection of claim the utility model is within the scope. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. The driving mechanism for the electric bicycle is characterized by comprising a transmission assembly, a driving unit, a torque middle shaft and a driven crank, wherein the output end of the driving unit is connected with the transmission assembly, the center of the transmission assembly is connected with the driven crank through the torque middle shaft, the torque middle shaft is transversely arranged, and the torque middle shaft is arranged on the upper side of the driving unit.

2. The driving mechanism for the electric bicycle according to claim 1, wherein the transmission assembly includes a driving crank, a cover plate, a one-way gear, and a torque middle shaft, the one-way gear is installed in the cover plate, the driving crank is installed at the outer end of the cover plate, the inner side of the upper end of the driving crank extends to the center of the one-way gear and is connected with the one-way gear through a spline, the driving crank is rotatably connected with the cover plate, and the center of the upper end of the driving crank is provided with an installation hole;

the driving unit comprises a shell, a controller, a driving machine, transmission shaft teeth a and transmission shaft teeth b, the controller, the driving machine, the transmission shaft teeth a and the transmission shaft teeth b are all installed inside the shell, the controller is connected with the driving machine, the transmission shaft teeth a are sleeved at the output end of the driving machine, and the transmission shaft teeth b are connected to the upper side of the transmission shaft teeth a in a meshed mode; and the transmission shaft teeth b are meshed and connected with a one-way gear of the transmission assembly.

3. The driving mechanism for electric bicycle according to claim 2, wherein one end of the moment center shaft is fixed to the mounting hole at the center of the upper end of the driving crank.

4. The driving mechanism for the electric bicycle according to claim 2, wherein the driving machine includes a housing, a stator coil, a rotor, a driving shaft, the stator coil is mounted outside the rotor, the housing is mounted outside the stator coil, and the driving shaft is mounted at a center shaft of the rotor; the transmission shaft teeth a are sleeved on the driving shaft.

5. The driving mechanism for electric bicycle according to claim 2, wherein the transmission gear teeth b are fixed in the housing by a rotating shaft.

6. The driving mechanism for electric bicycle according to claim 2, wherein the driving crank is coupled to the cover plate via a bearing.

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