CN112722147A

CN112722147A - Double-connecting-rod gear transmission mechanism of bicycle

Info

Publication number: CN112722147A
Application number: CN202110183031.5A
Authority: CN
Inventors: 徐宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-08
Filing date: 2021-02-08
Publication date: 2021-04-30

Abstract

A dual-link gear transmission mechanism for bicycle. Referring to the attached figure 5 of the specification, the double-link gear transmission mechanism consists of a pedal rotating large gear, 2 front and rear end transmission small gears, 2 transmission connecting rods, 2 front and rear end transmission discs and a one-way movable flywheel, power is transmitted to the pedal rod, the large gear, the front end small gear, the transmission discs, the transmission connecting rods, the rear end small gear, the transmission discs and the one-way movable flywheel through the pedal in sequence, and finally the power is transmitted to a rear wheel hub in threaded connection with an inner ring of the one-way movable flywheel to drive the rear wheel to rotate. Meanwhile, in order to prevent the 2 transmission connecting rods from dislocation and inversion in the power transmission and rotation process, the parallel rotation included angles of the 2 transmission connecting rods on the front and rear end pinions which are respectively connected with the transmission plates and the front and rear end pinions are arranged at 90 degrees, and the parallel rotation radiuses are the same and are symmetrically distributed on two sides of the transmission side of the bicycle frame, so that the power balanced transmission is achieved and the possible dislocation and inversion phenomena of the transmission connecting rods in the rotation process are prevented.

Description

Double-connecting-rod gear transmission mechanism of bicycle

Technical Field

The technical scheme relates to a transmission device in the power transmission process of bicycles, tricycles, electric bicycles and motorcycles, and is particularly suitable for a pedal rod of a bicycle and a transmission part between the output power of an engine of a motorcycle and a driving wheel.

Background

At present, transmission mechanisms between a bicycle pedal rod and a rear wheel and between a motorcycle engine assembly and a driving wheel are basically roller chain transmission, the transmission efficiency is about 0.9, the energy consumption utilization rate is not high during riding, and if the assembly precision between a one-way movable flywheel and a transmission chain is not adjusted in place, the phenomenon of blocking or chain falling can occur during riding. And most of the roller chain links are exposed in the air, and the chain links are easy to rust and the like in rainy and snowy weather for a long time. The storage battery of electric bicycle often takes place the unable phenomenon of starting of electric power inadequately at half way of riding, just will rely on the manpower pedal to trample and ride, and it is less to use roller chain drive to be limited to reasons transmission speed ratios such as assembly space relation originally, and the design choice leeway is little, therefore causes the pedal to trample and make more and more hard, and the speed of riding is slow, if change this technical scheme drive mechanism device with, is favorable to improving this kind of phenomenon by a wide margin. In addition, the structure of the chain transmission is almost unchanged since the chain transmission is used as a transmission part of bicycles and motorcycles, the novelty is lacked, although a small number of bicycles and motorcycles use gear shaft transmission, the gear shaft transmission transmits power through 2 groups of 90-degree vertical angle gears, the transmission efficiency is even lower than 0.9, a user feels hard to ride and experiences poor feeling, and due to the high precision of self processing and the high requirement of assembly, the wide popularization and application of the gear shaft transmission are limited by the relative high cost.

Disclosure of Invention

In order to overcome the defect of low transmission efficiency of the existing roller chain transmission mechanism, the technical scheme provides a double-connecting-rod gear transmission mechanism with a brand-new structure. The transmission mechanism has the advantages of simple structure, high transmission efficiency which reaches about 0.98, large transmission torque, small energy consumption loss and the like.

The transmission principle of the technical scheme is as follows: the double-link gear transmission mechanism consists of a pedal rotating large gear, a front end small gear, a transmission disc, 2 parallel rotating connecting rods symmetrically distributed on two sides of a transmission side frame, a rear end small gear, a transmission disc and a one-way movable flywheel. The parallel rotation radius of the 2 transmission connecting rods is the same as the rotation radius of the 2 transmission gears at the front end and the rear end as the rotation radius of the 2 transmission disks at the front end and the rear end, the power is transmitted to the outer gear ring of the unidirectional movable flywheel to drive the unidirectional movable flywheel, and finally the power is transmitted to the rear wheel hub in threaded connection with the inner ring of the unidirectional movable flywheel to drive the rear wheel to rotate, so that the purpose of power transmission is achieved. In order to prevent the dislocation and inversion phenomena of the 2 transmission connecting rods in the power transmission and rotation process, the connection of the transmission connecting rods 1 on the front end transmission disc and the rear end pinion and the parallel rotation included angle of the connection of the transmission connecting rods 2 on the front end pinion and the rear end transmission disc are installed in a way of 90 degrees, the parallel rotation radiuses of the 2 transmission connecting rods are the same and are symmetrically distributed on two sides of the transmission side of the bicycle frame, so that the balanced transmission in the power transmission process is ensured, the possible dislocation and inversion phenomena of the 2 transmission connecting rods in the whole power transmission mechanism rotation process are prevented, and the purpose of synchronously and uniformly transmitting power in the same direction is finally achieved.

The technical scheme adopted by the invention for solving the technical problems is as follows: the power of the bicycle double-link gear transmission mechanism is that a pedal rod drives a big gear wheel of a pedal, then a front end pinion and a front end transmission disc are driven to transmit the power to a rear end pinion and a rear end transmission disc which rotate in the same direction through 2 transmission connecting rods, so that the two gears synchronously rotate in the same direction and uniformly, then the power is transmitted to an outer gear ring of a one-way movable flywheel, and finally a rear wheel hub is driven to rotate by the one-way movable flywheel, thereby achieving the purpose of power transmission. Meanwhile, in order to prevent the 2 transmission connecting rods from dislocation and reversal in the power transmission and rotation period, the connection of the transmission connecting rod 1 on the front end transmission disc and the rear end pinion and the parallel rotation included angle of the connection of the transmission connecting rod 2 on the front end pinion and the rear end transmission disc are installed in a way of 90 degrees, the parallel rotation radiuses of the 2 transmission connecting rods are the same and are symmetrically distributed on two sides of the transmission side of the bicycle frame, so that the possible dislocation and reversal phenomena of the 2 transmission connecting rods in the rotation process are prevented, and finally, the purpose of synchronously and uniformly transmitting power in the same direction is achieved.

The invention has the beneficial effects that: the double-connecting-rod gear transmission mechanism overcomes the defects of low transmission efficiency, easy rusting, easy chain release and the like of the existing roller chain transmission mechanism, has high transmission efficiency which reaches about 0.98, small power loss and large transmission torque, can easily meet the power output transmission requirements of all bicycles, electric bicycles and motorcycles on the market at present, has smooth rotation and no blocking phenomenon, and simultaneously has the advantages of simple and light structure, small number of parts, low cost and the like.

Drawings

The invention will be further described with reference to the accompanying drawings in which:

figure 1 front view of the foot lever in horizontal position.

Fig. 2 top view of the foot lever in a horizontal position.

Fig. 3 a view of the vertical position of the foot bar.

Fig. 4 is a top view of the foot bar in a vertical position.

Fig. 5A-a is a sectional view in the direction of fig.

Fig. 6B-B is a sectional view in the direction of fig. B.

Fig. 7C-C are sectional views in the direction of fig.

The part numbers are as follows:

FIG. 5: (1) and (6) pedaling. (2) A foot pedal rod. (3) The bull gear is pedaled. (4) A front end pinion. (5) A front end transmission disc. (6) A transmission link 1. (7) A transmission link 2. (8) A rear end transmission disc. (9) A rear end pinion. (10) A one-way movable flywheel. (11) A rear hub. (12) And (4) contracting brakes of the rear wheels. (13) A bicycle frame.

Detailed Description

The power parallel transmission line 1 of the double-connecting-rod gear transmission mechanism sequentially transmits the processes:

in fig. 5, foot pedal (1) → foot pedal rod (2) → foot pedal large gear (3) → front end small gear (4) → front end transmission disc (5) → transmission link 1 (6) → rear end small gear (9) → unidirectional moving flywheel (10) → rear hub (11)

The power drives the pedal rod (2) to rotate through the pedal (1), the pedal rod (2) is tightly connected with the pedal big gear (3), so the pedal big gear (3) is driven to rotate, the front end pinion (4) meshed with the pedal big gear is driven to rotate, the front end transmission disc (5) tightly connected with the pedal big gear is driven to rotate together, then the transmission connecting rod (1), (6) is driven to rotate in parallel, the rear end pinion (9) is driven to rotate, then the outer gear ring of the one-way movable flywheel (10) meshed with the pedal big gear is driven to rotate, the one-way movable flywheel (10) is driven to rotate, finally the rear wheel hub (11) in threaded connection with the inner ring of the one-way movable flywheel (10) is driven to rotate, and the purpose of outputting power torque is achieved.

Secondly, the power parallel transmission line 2 of the double-connecting-rod gear transmission mechanism sequentially transmits the processes:

in fig. 5, foot pedal (1) → foot pedal rod (2) → foot pedal large gear (3) → front end small gear (4) → drive link 2 (7) → rear end drive plate (8) → rear end small gear (9) → unidirectional moving flywheel (10) → rear hub (11)

The power drives the pedal rod (2) to rotate through the pedal (1), the pedal rod (2) is tightly connected with the pedal big gear (3), so the pedal big gear (3) is driven to rotate, the front end pinion (4) meshed with the pedal big gear rotates, the transmission connecting rod (2) (7) is driven to rotate in parallel, the rear end transmission disc (8) is driven to rotate, the rear end pinion (9) tightly connected with the pedal big gear is driven to rotate together, the outer gear ring of the one-way movable flywheel (10) meshed with the pedal big gear is driven to rotate, the one-way movable flywheel (10) is driven to rotate, and finally the rear wheel hub (11) in threaded connection with the inner ring of the one-way movable flywheel (10) is driven to rotate, so the purpose of outputting power torque is achieved.

And thirdly, a limiting measure for balanced transmission and dislocation reverse rotation prevention of the double-connecting-rod gear transmission mechanism in the power transmission process is as follows:

in fig. 5, in order to prevent the transmission connecting rod 1 (6) and the transmission connecting rod 2 (7) from generating the dislocation and reversal phenomenon in the power transmission and rotation process, the transmission connecting rod 1 (6) is installed on the front end transmission disc (5) and the rear end pinion (9) and the transmission connecting rod 2 (7) is installed on the front end pinion (4) and the rear end transmission disc (8) in a way that the parallel rotation included angles are different by 90 degrees, the parallel rotation radiuses of the transmission connecting rod 1 (6) and the transmission connecting rod 2 (7) are the same and are symmetrically distributed on two sides of the transmission side of the bicycle frame (13), so that the balanced transmission in the power transmission process is ensured and the possible dislocation and reversal phenomenon in the whole power transmission mechanism rotation process of the transmission connecting rod 1 (6) and the transmission connecting rod 2 (7) is prevented, and finally the purpose of synchronously and uniformly transmitting power in the same direction is achieved.

Claims

1. The double-connecting-rod gear transmission mechanism of the bicycle is characterized in that a pedal drives a pedal rod, a pedal big gear, a front end pinion and a transmission disc, a transmission connecting rod, a rear end transmission disc and a pinion, a unidirectional free flywheel and a rear hub to be sequentially connected in a transmission manner: the power drives the pedal rod to rotate through the pedal, then the big gear is rotated, the front end pinion and the transmission disc are driven to rotate, then the rear end pinion and the transmission disc are driven to rotate through 2 connecting rods which have the same revolution radius as the rotation radius of the front end pinion and the rear end pinion and the transmission disc and synchronously rotate in the same direction and have the included angle difference of 90 degrees, then the unidirectional movable flywheel is driven to rotate, and finally the power is output to a rear wheel hub in threaded connection with the inner ring of the unidirectional movable flywheel to drive the rear wheel to rotate.

2. The bicycle two-link gear transmission as defined in claim 1, wherein: in the power transmission process of the power parallel transmission line 1, power drives a pedal rod to rotate through a pedal, the pedal rod is tightly connected with a large pedal gear, so that the large pedal gear is driven to rotate, a front end pinion meshed with the large pedal gear rotates, a front end transmission disc tightly connected with the large pedal gear is driven to rotate together, then the transmission connecting rod 1 is driven to rotate in parallel, a rear end pinion is driven to rotate, an outer gear ring of a one-way movable flywheel meshed with the small pedal gear ring is driven to rotate, the one-way movable flywheel is driven to rotate, and finally a rear wheel hub in threaded connection with an inner ring of the one-way movable flywheel is driven to rotate, so that the purpose of power transmission is achieved, and the output rotating speed required to be.

3. The bicycle two-link gear transmission as defined in claim 1, wherein: in the power transmission process of the power parallel transmission line 2, power drives a pedal rod to rotate through a pedal, the pedal rod is tightly connected with a large pedal gear, so that the large pedal gear is driven to rotate, a front end pinion meshed with the large pedal gear rotates, the transmission connecting rod 2 is driven to rotate in parallel, a rear end transmission disc is driven to rotate, a rear end pinion tightly connected with the small pedal gear is driven to rotate together, an outer gear ring of a one-way movable flywheel meshed with the small pedal gear ring is driven to rotate, the one-way movable flywheel is driven to rotate, and finally a rear wheel hub in threaded connection with an inner ring of the one-way movable flywheel is driven to rotate, so that the purpose of power transmission is achieved, and the output rotating speed required to be.

4. The bicycle two-link gear transmission as defined in claim 1, wherein: the transmission connecting rod 1 is connected on the front end transmission disc and the rear end pinion, and the transmission connecting rod 2 is connected on the front end pinion and the rear end transmission disc and rotates the included angle difference 90 degrees, the transmission connecting rod 1 and the transmission connecting rod 2 parallel rotation radius are the same, and the symmetric distribution is on the bicycle frame transmission side both sides, reach the balanced transmission in the power transmission process and prevent the dislocation reversal phenomenon that 2 transmission connecting rods probably take place at whole power transmission rotation process with this, play the effect of synchronous syntropy balanced transmission power.