CN218317116U

CN218317116U - Electric auxiliary bicycle

Info

Publication number: CN218317116U
Application number: CN202222354605.3U
Authority: CN
Inventors: 钟为之; 张志宾
Original assignee: Junxing Electromechanical Co ltd
Current assignee: Junxing Electromechanical Co ltd
Priority date: 2022-08-22
Filing date: 2022-09-05
Publication date: 2023-01-17
Anticipated expiration: 2032-09-05
Also published as: TWM635056U; JP3239796U; DE202022105187U1

Abstract

The utility model discloses an electric auxiliary bicycle, it includes a frame, a motor body, a first gear box, a second gear box, a battery and a controller, this motor body is installed in the nearly bottom department of riser, this first gear box has a drive shaft and a reduction gear group, this drive shaft combines together with reduction gear group and is connected with motor body's rotor, be provided with a transmission shaft again on reduction gear group, this second gear box is connected with the transmission shaft of first gear box, this second gear box includes a steering gear group, a five-way mandrel and a torque sensor, this steering gear group is connected with an isolator with the transmission shaft, this torque sensor sets up between steering gear group and five-way mandrel, this controller sets up in the inside of frame, this battery sets up in the low tube of frame and is connected with the controller electricity.

Description

Electric auxiliary bicycle

Technical Field

The utility model relates to a bicycle, concretely relates to electric auxiliary bicycle.

Background

The bicycle has both traffic and sports leisure functions, so that a rider needs to step on pedals of the bicycle to advance, however, in some road sections such as climbing, the manually driven bicycle often causes great physical load on the rider, so that the difficulty of completely driving by manpower can be solved by the conventional bicycle driven by electric power assistance, and therefore, in the road sections such as climbing, the bicycle can smoothly advance, and how to install electric power equipment such as a horse 36921and the like in the limited space of the bicycle is a very important subject.

SUMMERY OF THE UTILITY MODEL

Therefore, the inventor of the present invention has made extensive and intensive studies and experiments to improve the structure and use of the existing bicycle, and has developed a new bicycle that can improve the existing deficiencies.

The main object of the present invention is to provide an electric bicycle, which utilizes a motor assembly to provide auxiliary power for a rider, so as to improve the smoothness and comfort of the bicycle.

To achieve the above objects, the present invention provides an electric assist bicycle, which includes a frame including a vertical tube and a lower tube;

a motor body, the motor body is arranged at the position close to the bottom end of the vertical pipe and is provided with a rotor;

the first gear box is connected with the motor body and is provided with a driving shaft and a reduction gear set, the driving shaft is combined with the reduction gear set and is connected with a rotor of the motor body, and a transmission shaft which is coaxial with the driving shaft is arranged on the reduction gear set;

the second gear box is connected with a transmission shaft of the first gear box, the second gear box comprises a steering gear set, a five-way mandrel and a torque sensor, the steering gear set is connected with the transmission shaft through an isolator, the five-way mandrel is connected with the steering gear set and transversely rotates, and the torque sensor is arranged between the steering gear set and the five-way mandrel and is used for detecting the rotating torque and the rotating speed of the five-way mandrel;

the controller is arranged inside the frame and is electrically connected with the motor body; and

and the battery is arranged in the lower pipe of the frame and is electrically connected with the controller so as to provide a power source for the controller and the motor body to actuate.

The electric auxiliary bicycle is characterized in that the reduction gear set is a planetary gear set with small tooth difference and comprises an eccentric part, two driving parts, an inner tooth part, an upper support, a plurality of output rings, a plurality of fixing parts and a lower support, the eccentric part is eccentrically and integrally formed at the bottom end of the driving shaft relative to the driving shaft, the two driving parts are arranged on the eccentric part, a tooth part is formed at the periphery of each driving part, the inner tooth part is arranged around the two driving parts, an inner tooth part meshed with the tooth parts of the two driving parts is formed, the upper support and the lower support are respectively arranged at the upper side and the lower side of the two driving parts, each output ring penetrates through the two driving parts, each fixing part penetrates through the upper support and the driving ring respectively and is fixedly combined with the lower support, the lower support can rotate along with the rotation of the driving parts and is driven by the upper support and the output rings, and the transmission shaft is convexly arranged at the bottom end of the lower support.

The electric assist bicycle, wherein the full tooth height of the reduction gear set is 0.6 to 1.5 times the module, the difference in the number of teeth is a multiple of 2, and the pressure angle is 12 ° to 30 °.

Wherein, a key groove combined with the rotor of the motor body is concavely arranged on the driving shaft.

In the electric assist bicycle, the torque sensor is annularly arranged on the five-way spindle in a surrounding manner.

The electric assist bicycle, wherein the controller is disposed in the seat tube of the frame.

The electric auxiliary bicycle is characterized in that the controller is arranged in an upper pipe of the frame.

The electric assist bicycle, wherein the controller is disposed in a lower tube of the frame.

The electric auxiliary bicycle is characterized in that the controller is arranged in a front fork tube of the bicycle frame.

Compared with the prior art, the beneficial effects of the utility model reside in that:

through the technical means, the utility model discloses output shaft torsion's change is listened to usable torque sensor, comes linkage control ware with the starter motor assembly to utilize the motor assembly to provide the rider auxiliary power, ride the effect of taking advantage of smooth and easy nature and travelling comfort in order to reach the promotion bicycle.

Drawings

FIG. 1 is a side view of the present invention;

fig. 2 is a perspective view of the frame of the present invention;

FIG. 3 is a perspective view of the motor of the present invention;

fig. 4 is an exploded perspective view of the motor of the present invention;

fig. 5 is a side sectional exploded view of the motor of the present invention;

fig. 6 is an exploded perspective view of the reduction gear set of the present invention.

Description of the symbols:

10 vehicle frame

12: vertical pipe

14: lower tube

20 motor body

22. Rotor

30 first gear box

32 driving shaft

321 eccentric part

322 key groove

33 driving part

331 th of tooth part

34 internal gear

341 internal teeth portion

35 lower support

351, transmission shaft

40: second gear box

42 one-way clutch

44 five-way mandrel

46 torsion sensor

50 controller

60: battery

Detailed Description

The utility model mainly provides an electric auxiliary bicycle please cooperate and refer to fig. 1 and fig. 2, can see by the picture, the utility model discloses an electric auxiliary bicycle mainly includes a frame 10, a motor body 20, a first gear box 30, a second gear box 40, a controller 50 and a battery 60, and wherein this frame 10 structure can be roughly the same with current bicycle, includes riser 12, low tube 14, top tube, front fork pipe and back fork pipe etc. on the whole, and its detailed structure is here and not repeated.

Referring to fig. 3 to 5, the motor body 20 is installed near the bottom end of the vertical tube 12 near the bottom end of the five-way tube, and a rotor 22 is disposed in the motor body 20.

The first gear case 30 is connected to the motor body 20, and has a driving shaft 32 and a reduction gear set, the driving shaft 32 is coupled to the reduction gear set 34 and linked with the rotor 22 of the motor body 20 such that the driving shaft 32 can rotate with the rotation of the rotor of the motor body 20, wherein a key groove 322 coupled to the rotor 32 of the motor body 30 is concavely formed on the driving shaft 32, and the rotation speed of the driving shaft 32 is reduced to a predetermined low speed by the reduction gear set, and a transmission shaft 351 coaxial with the driving shaft 32 is formed on the reduction gear set.

Referring to fig. 5 and 6, the reduction gear set can be a small teeth difference planetary gear set or a harmonic reduction gear set, wherein the present invention, taking the small teeth difference planetary gear set as an example, includes an eccentric portion 321, two driving members 33, an internal tooth member 34, an upper bracket 31, a plurality of output rings 36, a plurality of fixed members and a lower bracket 35, the eccentric portion 321 is eccentrically and integrally formed at the bottom end of the driving shaft 32 relative to the driving shaft 32, the two driving members 33 are annularly disposed on the eccentric portion 34, and a tooth portion 331 is formed at the periphery of each driving member 33, preferably, the two driving members are two planetary gears, and two bearings respectively corresponding to the driving members 33 can be sleeved on the eccentric portion 321 to improve the smoothness of transmission between the eccentric portion 321 and the driving members 33, the internal gear 34 is disposed around the two driving members 33 and forms an internal gear 341 engaged with the teeth 331 of the two driving members 33, wherein the internal gear 34 can be integrally formed on the box of the first gear box 30, or is an independent member fixed inside the box of the first gear box 30, the upper bracket 31 and the lower bracket 35 are respectively disposed on the upper and lower sides of the two driving members 33, each output ring 36 penetrates through the two driving members 33, each fixing member respectively penetrates through the upper bracket 31 and the driving ring 36 and is fixedly combined with the lower bracket 35, so that the lower bracket 35 can rotate with the driving members 33 and is driven to rotate by the upper bracket 31 and the output ring 36, wherein each driving member 33 is respectively provided with a through hole through which the output ring 36 can penetrate and has a diameter larger than that of the output ring 36, and the transmission shaft 351 is protrudingly disposed at the bottom end of the lower bracket 35.

Thus, when the rotor 22 of the motor body 20 drives the driving shaft 32 to rotate, the two driving members 33 are engaged with the internal teeth 341 of the internal teeth 34 through the teeth 331, and the two driving members 33 can rotate with the eccentric portion 321 integrally formed at the bottom end of the driving shaft 32 to swing, so that when the two driving members 33 deflect, the upper bracket 31, the output rings 36 and the fixing member can drive the lower bracket 35 to rotate, thereby rotating the transmission shaft 351 and achieving the speed reduction effect, in addition, the full tooth height of the speed reduction gear set can be 0.6 to 1.5 times of module, the difference of the number of teeth is a multiple of 2, and the pressure angle can be 12 ° to 30 °, wherein 30 ° is preferred.

The second gear box 40 is connected to the first gear box 30, the second gear box 40 includes a steering gear set, a five-way spindle 44 and a torque sensor 46, the steering gear set is connected to the transmission shaft 36 by a one-way clutch 42 and connected to the laterally rotating five-way spindle 44 for axially steering the rotation of the transmission shaft 42 to the laterally five-way spindle 44, and the five-way spindle 44 is connected to and drives two pedals for providing auxiliary riding power for a bicycle rider, wherein the steering gear set can be a bevel gear set or a face gear set, the detailed structure of which is not described herein, the torque sensor 46 is disposed between the steering gear set and the five-way spindle 44, and the torque sensor 46 can be annularly disposed on the five-way spindle 44 in a surrounding manner for detecting the rotation torque and speed of the five-way spindle 44.

The controller 50 is disposed inside the frame 10, and can be disposed at the stand pipe 12, the upper pipe, the lower pipe 14 or the front fork, but the present invention is not limited thereto, and the controller 50 is electrically connected to the motor body 20 and the torque sensor 46, and the battery 60 is disposed in the lower pipe 14 of the frame 10 and electrically connected to the controller 59, so as to provide a power source for the motor body 22 to actuate.

Therefore, when the bicycle is riding on a general plane or a downhill road section, since a rider does not need to exert too much effort to step on the pedals, the rotational torque transmitted from the pedals to the five-way spindle 44 is not too large, at this time, the torque sensor 46 does not start the motor body 20, the motor body 20 will not provide auxiliary power temporarily, and when the bicycle is riding on a relatively hard road section such as an uphill road section, the rider applies more force to the pedals, so the pedals will cause larger rotational torque to the five-way spindle 44, at this time, when the torque sensor 46 detects that the rotational torque of the five-way spindle 44 exceeds a predetermined value, the controller 50 is linked to start the motor body 20 to drive the driving shaft 32 to rotate, and the five-way spindle 44 is driven to rotate through the reduction gear set of the first gear box 30 and the steering gear set of the second gear box 40 to assist in driving the pedals to rotate, thereby providing an electric auxiliary power to the pedals to assist the bicycle to smoothly advance on the road section such as the uphill road section.

Therefore, the utility model discloses can ride in general highway section, utilize the power of the person of riding to ride and take advantage of, and when meeting hard highway sections such as uphill, the change of five-way mandrel 44 torsion is listened to usable torque sensor 46, starts motor body 20 to utilize motor body 20 to provide the person of riding auxiliary power, take advantage of in order to promote the bicycle to ride and take advantage of smoothly nature and travelling comfort.

In addition, the utility model discloses a drive shaft 32 on the first gear box 30 is connected with motor body 20, and the last transmission shaft 351 of first gear box 30 is connected with second gear box 40 through an isolator 42, so can let motor body, first gear box 30 and second gear box 40 be modular manufacturing and equipment, can improve the convenience of assembling motor body 20 first gear box 30 and second gear box 40 on frame 10 by a wide margin, and then reduce the holistic manufacturing of electronic auxiliary vehicle and assembly cost.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric assist bicycle, comprising:

a frame including a vertical tube and a down tube;

the controller is arranged in the frame and is electrically connected with the motor body; and

2. The electric assist bicycle as claimed in claim 1, wherein the reduction gear set is a planetary gear set with a small teeth difference, and comprises an eccentric portion, two driving members, an inner gear member, an upper bracket, a plurality of output rings, a plurality of fixed members and a lower bracket, the eccentric portion is integrally formed at a bottom end of the driving shaft in an eccentric manner with respect to the driving shaft, the two driving members are disposed on the eccentric portion and have teeth formed at peripheries thereof, the inner gear member is disposed around the two driving members and has an inner gear portion engaged with the teeth of the two driving members, the upper bracket and the lower bracket are disposed at upper and lower sides of the two driving members, respectively, the output rings are disposed through the two driving members, the fixed members are respectively disposed through the upper bracket and the driving rings and fixedly coupled to the lower bracket, so that the lower bracket can rotate by being driven by the upper bracket and the output rings with the rotation of the driving members, and the transmission shaft is protrudingly disposed at a bottom end of the lower bracket.

3. The motor-assisted bicycle according to claim 2, wherein the reduction gear set has a full tooth height of 0.6 to 1.5 times module, a difference in tooth count of 2 times, and a pressure angle of 12 ° to 30 °.

4. The motor-assisted bicycle of claim 2, wherein a key groove for coupling with the rotor of the motor body is recessed in the driving shaft.

5. The electric assist bicycle of any one of claims 1-4, wherein the torque sensor is disposed around the bottom bracket axle in a ring shape.

6. The power-assisted bicycle of claim 5, wherein the controller is disposed in a seat tube of the frame.

7. The motor-assisted bicycle of claim 5, wherein the controller is disposed in an upper tube of the frame.

8. The motor-assisted bicycle of claim 5, wherein the controller is disposed in a down tube of the frame.

9. The power-assisted bicycle of claim 5, wherein the controller is disposed in a front fork of the frame.

10. An electrically assisted bicycle according to any of claims 1 to 4, wherein the controller is provided in a riser of the frame.

11. The motor-assisted bicycle according to any one of claims 1 to 4, wherein the controller is disposed in a top tube of the frame.

12. The motor-assisted bicycle of any one of claims 1 to 4, wherein the controller is disposed in a down tube of the frame.

13. The motor-assisted bicycle of any one of claims 1 to 4, wherein the controller is disposed in a front fork of the frame.