WO2022083087A1

WO2022083087A1 - Dual-disk driving device for bicycle

Info

Publication number: WO2022083087A1
Application number: PCT/CN2021/089341
Authority: WO
Inventors: 孔德玲
Original assignee: 广东皇田环保科技有限公司
Priority date: 2020-10-19
Filing date: 2021-04-23
Publication date: 2022-04-28
Also published as: CN112078722A

Abstract

A dual-disk driving device for a bicycle, comprising a first gear disk (1), a second gear disk (2), a transmission gear shaft (3) and a rear wheel (8). The first gear disk (1) and the second gear disk (2) are oppositely arranged; and the first gear disk (1) and the second gear disk (2) may jointly drive the transmission gear shaft (3) to rotate, thereby driving the rear wheel (8) to rotate. The two gear disks (1, 2) may jointly drive the transmission gear shaft (3), and power output is stronger, cycling requires less effort, and transmission efficiency is improved.

Description

A bicycle double disc drive device

technical field

The invention relates to the technical field of bicycles, in particular to a bicycle double disc drive device.

Background technique

The traditional transmission structure of a bicycle is a sprocket chain structure. The chain of this structure is prone to loosening, which affects the transmission efficiency, resulting in more laborious riding.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a bicycle double disc drive device, the gear disc and the transmission gear shaft realize transmission, so as to replace the traditional sprocket chain structure, and the two gear discs can jointly drive the transmission gear shaft, the power output is stronger, and the riding The driving is more labor-saving, and the transmission efficiency is also improved, which solves the problem of poor power output of the existing sprocket chain transmission or single-tooth drive structure, and the riding is more laborious.

For this purpose, the present invention adopts the following technical solutions:

A bicycle double disc drive device, comprising a first chainring, a second chainring, a transmission pinion and a rear wheel;

The first chainring is arranged opposite to the second chainring;

The first chainring and the second chainring can jointly drive the transmission pinion to rotate, thereby driving the rear wheel to rotate.

As a result, the first chainring and the second chainring can jointly transmit power to the transmission pinion, and the power output is stronger, that is, the rear wheel can be driven more effortlessly, compared with the traditional sprocket chain drive or single-tooth drive structure, etc. Less effort and higher transmission efficiency.

In some embodiments, the device further includes an additional gear, one end of the transmission pinion is provided with a front drive gear, the first chainring is engaged with one side of the front drive gear, the other side of the front drive gear is engaged with one side of the additional gear, and the additional The other side of the gear meshes with the second chainring.

Therefore, the combination of the front drive gear and the auxiliary gear is arranged between the first toothed plate and the second toothed plate, so that the first toothed plate and the second toothed plate can jointly drive the front drive gear, improve the output of torque and power, and have a simple structure , high transmission efficiency.

In some embodiments, the device further includes a rear gear plate, the other end of the transmission pinion is provided with a rear drive gear, the rear drive gear is engaged with the rear gear plate, and the rear gear plate is drivingly connected with the rear wheel.

Thereby, the rear drive gear transmits power to the rear chainring, thereby driving the rear wheels to rotate.

In some embodiments, the first chainring is provided with a concave tooth structure, the second chainring is provided with a convex tooth structure, the front drive gear is provided with a convex tooth structure, the auxiliary gear is provided with a concave tooth structure, and the rear drive gear is provided with a convex tooth structure , The rear gear plate is provided with a concave tooth structure.

In this way, meshing connection is achieved between the first chainring, the front drive gear, the additional gear, and the second chainring, and the meshing connection is achieved between the rear drive gear and the rear chainring.

In some embodiments, the convex tooth structure is conical, and the generatrix of the conical surface is arc-shaped;

The concave tooth structure is conical, and the generatrix of the conical surface is arc-shaped.

Therefore, the matching structure of the conical convex teeth and the concave teeth is beneficial to reduce the wear of the teeth, reduce the transmission friction, and improve the transmission efficiency.

In some embodiments, the diameter dimension of the front drive gear is larger than the diameter dimension of the rear drive gear.

In some embodiments, the first chainring and the second chainring are both connected to the first rotating shaft;

A first pedal is connected to the edge of the first chainring;

A second pedal is connected to the edge of the second chainring.

Therefore, the foot pedals are all arranged on the edge portion of the gear plate, which is beneficial to increase the torque, so that the transmission pinion and the rear wheel can be driven with less effort.

In some embodiments, the additional gear is rotatably connected to the second rotating shaft, and an end of the second rotating shaft away from the additional gear is provided with a bracket, and the bracket is connected to the vehicle frame.

In some embodiments, the transmission pinion is an integrally formed structure.

Therefore, the structural strength of the integrally formed transmission pinion is better.

The beneficial effects of the invention: the first chainring and the second chainring form a double chainring structure, which can jointly drive the transmission gear shaft to rotate, the power is stronger, the riding is more labor-saving, and the transmission efficiency is also high, which can replace the traditional chain Transmission structures such as wheels and chains.

Description of drawings

Fig. 1 is the structure diagram of a kind of bicycle double disc drive device of the present invention;

Fig. 2 is the enlarged view of A place of Fig. 1;

Fig. 3 is the structure diagram of the transmission pinion of the present invention;

Among them: 1-first chainring; 2-second chainring; 3-transmission pinion; 31-front drive gear; 32-rear drive gear; 4-rear chainring; 5-attached gear; 6-first shaft; 71-second shaft; 72-bracket; 8-rear wheel; 91-first pedal; 92-second pedal; 10-convex structure; 20-concave structure.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

Referring to FIGS. 1 to 3 , a bicycle double disc drive device includes a first chainring 1 , a second chainring 2 , a transmission pinion 3 and a rear wheel 8 ;

The first chainring 1 and the second chainring 2 are arranged opposite to each other;

The first chainring 1 and the second chainring 2 can jointly drive the transmission pinion 3 to rotate, thereby driving the rear wheel 8 to rotate.

Further description, the device also includes an attached gear 5, one end of the transmission pinion 3 is provided with a front drive gear 31, the first toothed plate 1 meshes with one side of the front drive gear 31, and the other side of the front drive gear 31 is connected with a side of the attached gear 5. Side meshing, the other side of the attached gear 5 meshes with the second chainring 2 .

Further description, the device also includes a rear gear plate 4, the other end of the transmission pinion 3 is provided with a rear drive gear 32, the rear drive gear 32 meshes with the rear gear plate 4, and the rear gear plate 4 is drivingly connected with the rear wheel 8.

Further description, the first chainring 1 is provided with a concave tooth structure 20, the second chainring 2 is provided with a convex tooth structure 10, the front drive gear 31 is provided with a convex tooth structure 10, the auxiliary gear 5 is provided with a concave tooth structure 20, and the rear drive gear is provided with a concave tooth structure 20. 32 is provided with a convex tooth structure 10 , and the rear sprocket 4 is provided with a concave tooth structure 20 .

Further description, the convex tooth structure 10 is conical, and the generatrix of the conical surface is arc-shaped;

The concave tooth structure 20 is conical, and the generatrix of the conical surface is arc-shaped.

To further explain, the diameter of the front-drive gear 31 is larger than the diameter of the rear-drive gear 32 .

Further description, the first chainring 1 and the second chainring 2 are both connected to the first rotating shaft 6;

A first pedal 91 is connected to the edge of the first chainring 1;

A second pedal 92 is connected to the edge of the second chainring 2 .

To further illustrate, the additional gear 5 is rotatably connected to the second shaft 71 , and the end of the second shaft 71 away from the additional gear 5 is provided with a bracket 72 , and the bracket 72 is connected to the frame.

To further illustrate, the transmission pinion 3 has an integrally formed structure.

working principle:

The double-disc drive device can be applied to a bicycle, can replace the traditional sprocket chain structure, and can drive the automatic bicycle forward with less effort.

The first chainring 1 and the second chainring 2 of the device are coaxially connected to the first rotating shaft 6, and the first chainring 1 and the second chainring 2 can be rotatably connected to the first rotating shaft 6 through structures such as bearings. On the other hand, it is also possible that both the first chainring 1 and the second chainring 2 are linked with the first rotating shaft 6, and the first rotating shaft 6 is rotatably connected to the frame of the bicycle through a structure such as a bearing.

The edges of the first chainring 1 and the second chainring 2 are provided with a first foot pedal 91 and a second foot pedal 92 , and the chainring can be driven to rotate by stepping on the foot pedal. The edge portion of the second pedal 92 connected to the corresponding toothed disc can directly drive the corresponding toothed disc to rotate, the output torque and power are larger, and the transmission efficiency is higher.

The front drive gear 31 of the transmission pinion 3 can be meshed with either the first chainring 1 or the first chainring 1 . The inner side meshes with one side of the front drive gear 31 , the other side of the front drive gear 31 meshes with the additional gear 5 , and the other side of the additional gear 5 meshes with the inner side of the second chainring 2 . The toothed plate 2 can transmit torque and power to the front drive gear 31 in the same direction together with the first toothed plate 1, so that the first toothed plate 1 and the second toothed plate 2 can jointly drive the transmission pinion 3, as if they have dual drives, The output torque and power are stronger, and the bicycle can be driven forward with less effort.

The rear drive gear 32 of the transmission pinion 3 is meshed and connected with the rear toothed plate 4, and the rear toothed plate 4 is drivingly connected with the rear wheel 8, which can drive the rear wheel 8 to rotate, and the rear wheel 8 and the rear toothed plate 4 can be connected to the rear of the frame. on the axis.

The additional gear 5 is connected to the frame through a second rotating shaft 71 and a bracket 72 and other structures, and the transmission pinion 3 can also be installed on the frame through an axle seat or other positioning structures.

It can be seen that the entire double-disc drive device has a simple and compact structure, strong power output, high transmission efficiency, and less effort for riding.

The tooth structure of the first toothed plate 1, the second toothed plate 2, the transmission pinion 3, the attached gear 5 and the rear toothed plate 4 is roughly conical, and the size of the tooth structure can be set according to the corresponding parts, specifically the convex tooth structure 10 is conical, and the generatrix of the conical surface is arc-shaped, and the corresponding concave teeth are also conical, and the generatrix of the conical surface is arc-shaped, and the generatrix can be an involute, so that the meshing between the convex teeth and the concave teeth is smoother, It is beneficial to reduce wear and friction and reduce the loss of mechanical energy.

Disclosed above are only some embodiments of the invention. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, several modifications and improvements can be made, which all belong to the protection scope of the invention.

Claims

A bicycle double disc drive device, characterized in that it comprises a first chainring (1), a second chainring (2), a transmission pinion (3) and a rear wheel (8);

The first chainring (1) is arranged opposite to the second chainring (2);

The first toothed plate (1) and the second toothed plate (2) can jointly drive the transmission pinion (3) to rotate, thereby driving the rear wheel (8) to rotate.
A bicycle double disc drive device according to claim 1, characterized in that it further comprises an additional gear (5), and one end of the transmission pinion (3) is provided with a front drive gear (31);

The first toothed plate (1) meshes with one side of the front drive gear (31), and the other side of the front drive gear (31) meshes with one side of the additional gear (5), the additional gear The other side of (5) meshes with the second chainring (2).
A bicycle double disc drive device according to claim 2, characterized in that it further comprises a rear gear disc (4), and the other end of the transmission pinion (3) is provided with a rear drive gear (32);

The rear drive gear (32) meshes with the rear gear plate (4), and the rear gear plate (4) is drivingly connected with the rear wheel (8).
The bicycle double disc drive device according to claim 3, wherein the first chainring (1) is provided with a concave tooth structure (20), and the second chainring (2) is provided with a convex tooth structure (10), the front drive gear (31) is provided with a convex tooth structure (10), the auxiliary gear (5) is provided with a concave tooth structure (20), and the rear drive gear (32) is provided with a convex tooth structure ( 10), the rear tooth plate (4) is provided with a concave tooth structure (20).
A bicycle double disc drive device according to claim 4, characterized in that the convex tooth structure (10) is conical, and the generatrix of the conical surface is arc-shaped;

The concave tooth structure (20) is conical, and the generatrix of the conical surface is arc-shaped.
A bicycle double disc drive device according to claim 3, characterized in that the diameter of the front-drive gear (31) is larger than the diameter of the rear-drive gear (32).
A bicycle double disc drive device according to any one of claims 1-4, characterized in that the first chainring (1) and the second chainring (2) are both connected to the first rotating shaft (6). );

A first pedal (91) is connected to the edge of the first chainring (1);

A second pedal (92) is connected to the edge of the second chainring (2).
A bicycle double-disc drive device according to any one of claims 2-4, characterized in that, the additional gear (5) is rotatably connected to a second rotating shaft (71), and the second rotating shaft (71) A bracket (72) is provided at one end away from the additional gear (5), and the bracket (72) can be connected with the vehicle frame.
A bicycle double disc drive device according to any one of claims 1-4, characterized in that the transmission pinion (3) is an integrally formed structure.