A double-flying linkage up and down riding lever-type driving device for bicycles

Abstract

A double-flying linkage up and down riding lever-type driving device for bicycles belongs to the field of bicycle manufacturing technology. The structure is composed of a device housing, a bearing seat, a central axis, a driving rod, a belt, a spring, a rotating wheel, a crank, etc. The invention has a novel structure and a clear working principle. The central axis is driven to rotate by the up and down swinging of the left and right cranks, the driving rod is driven to swing up and down by the central axis, the belt is driven to extend and retract by the driving rod, and the rotating wheel is driven to reset by the spring. Compared with the traditional bicycle driving structure, the present invention can realize single-side independent driving and double-side alternating driving. When driving, the previous pedaling circle action mode is changed to an up and down action mode. After the pedal is stepped on, it is automatically reset by the spring, which solves the problem of dead point position effort during traditional bicycle driving, saves the physical strength of the rider, and further improves the riding efficiency. The key is that it is easy to operate and further meets the riding needs of different groups of people, especially those with leg disabilities.

Description

Technical Field

[0001] The invention belongs to the technical field of bicycle manufacturing and relates to a bicycle driving device, in particular to a double-flying linkage up and down riding lever type driving device for a bicycle. Background Art

[0002] my country has a large population and is a country with a large number of bicycle users. Bicycles are an indispensable part of urban transportation. The use of bicycles has the following advantages: (1) There is no air and noise pollution, which can provide residents and tourists with a convenient green travel mode, improve the green competitiveness of the city, and at the same time, cycling can help to strengthen the body and reduce the occurrence of urban diseases; (2) It provides cities with short-distance travel solutions of 1-5 kilometers, improves the utilization rate of road resources, alleviates road traffic congestion, and solves the problem of the "last 1 kilometer" of public transportation; (3) Compared with buses, bicycles have the characteristics of small size, flexible operation, good accessibility and low investment. They can be used as an auxiliary tool for rail transit connection, maximize the rational use of various transportation resources, meet the multi-level short-distance travel needs of residents and the transportation needs of different travel purposes, conveniently and efficiently gather and distribute passenger flow, and improve the overall operation efficiency of urban transportation.

[0003] However, the existing bicycle is driven by controlling the handlebars and front wheel of the bicycle by hand to control the direction. The person sits on the bicycle seat and uses the power of the feet and legs to drive the pedals, and then drives the flywheel on the rear wheel by pedaling and rotating the wheel disc to make the bicycle move forward. The driving device of this bicycle is that one end of the crank is connected to the middle shaft, and the middle shaft also participates in the transmission, that is, the small circle (middle shaft) drives the large circle (crank plate), but the driving efficiency near the dead point (the bicycle crank is consistent with the direction of gravity) is extremely low, and the pedal is the most laborious. When the bicycle is riding on a flat bottom or downhill, the inertia of the bicycle crank can naturally move past the dead point to overcome it, but when the bicycle is riding at a slow speed or uphill, this problem is more prominent. At the dead point, because the direction of the force is consistent with the direction of the lever arm, the dynamic torque is zero at this time, which causes a great waste of manpower, easily causes fatigue of the rider, is not conducive to physical exercise, and if the riding time is too long, it will cause pain in the buttocks and legs. Therefore, it is particularly important to design a labor-saving driving device for bicycles. Summary of the invention

[0004] The present invention aims at the disadvantages that traditional bicycles are driven by circular pedals and the chainrings are driven by the central axis, but the driving efficiency is low when the crank is consistent with the direction of gravity during pedaling, pedaling is laborious, and it is easy to cause fatigue of the rider, which is not conducive to physical exercise and will cause pain in the buttocks and legs. A double-flying linkage up and down riding lever type driving device for bicycles is proposed. By changing the structure of the device and the pedaling method, the physical strength of the rider is saved, the riding needs of different groups of people can be further met, and the riding efficiency is further improved.

[0005] The technical solution of the present invention is a double-flying linkage up and down riding lever-type driving device for a bicycle, comprising a device shell, a left crank and a right crank arranged on the outside of the device shell, and a left pedal and a right pedal arranged on the left and right cranks; it is characterized in that: a front platform is provided at the front end inside the device shell, a front left bearing seat and a front right bearing seat are provided on the front platform, bearings are provided in the front left bearing seat and the front right bearing seat, a left middle axis is provided in the bearing in the front left bearing seat, one end of the left middle axis extends out of the device shell and is connected to the left crank, a left driving rod is fixedly provided on the left middle axis; a right middle axis is provided in the bearing in the front right bearing seat, one end of the right middle axis extends out of the device shell and is connected to the right crank; a right driving rod is fixedly provided on the right middle axis, a left rear platform and a right rear platform are provided at the rear end inside the device shell, the left A left rear bearing seat is provided on the rear platform, a right rear bearing seat is provided on the right rear platform, bearings are provided in the left rear bearing seat and the right rear bearing seat, a rotating shaft is provided in the bearing, a left rotating wheel and a right rotating wheel are provided on the rotating shaft, and flywheels are provided in the left rotating wheel and the right rotating wheel, the center of the flywheel is fixedly connected with the rotating shaft, the outer side of the flywheel is connected and fixed with the left and right rotating wheels, a left belt and a left spring are wound around the left rotating wheel, the left belt is connected with the left driving rod, and the head of the left spring is connected with the front left bearing seat; a right belt and a right spring are wound around the right rotating wheel, the right belt is connected with the right driving rod, and the head of the right spring is connected with the front right bearing seat, a fixed sprocket is provided on the outer side of the right rotating wheel, a chain is provided on the sprocket, and the chain passes through the device housing and is connected with the flywheel on the rear axle of the bicycle.

[0006] The left driving rod and the right driving rod have the same structure. The left and right driving rods are an inverted "L"-shaped structure formed by bending the whole rod twice. The angles at the two bends are not less than 90°. The short rod ends of the left and right driving rods are welded and fixed to their respective central axes, and the long rod ends of the left and right driving rods are tightly connected to their respective belts.

[0007] The left crank and the right crank have the same structure. The left and right cranks are two-section connecting rod structures. There is an angle of not less than 120° between the two connecting rods. The two connecting rods are tightened and fixed by fasteners. The angle between the two connecting rods is adjustable. The center distance between the left and right side middle axes and the pedal shaft is not less than the center distance between the left and right side middle axes and the shaft.

[0008] The front platform, the left rear platform and the right rear platform are all welded and fixed to the device shell, and the front platform, the left rear platform and the right rear platform are arranged at the same height.

[0009] The left rotating wheel and the right rotating wheel are both groove wheels with double grooves, and the outer ring of the flywheel and the inner ring of the groove wheel, as well as the inner ring of the flywheel and the outer ring of the rotating shaft all form an interference fit.

[0010] The sprocket and the right rotating wheel form a coaxial thread and are screwed and fixed.

[0011] The front platform is provided with a buffer limit block, which is arranged on the front platform directly facing the lower part of the left and right driving rods.

[0012] The beneficial effects of the present invention are as follows: the present invention proposes a double-flying linkage up and down riding lever-type driving device for bicycles, which has a novel structure and a clear working principle. The structure is composed of a device housing, a bearing seat, a central axis, a driving rod, a belt, a spring, a rotating wheel, a crank, a sprocket and other components. The central axis is driven to rotate by the up and down swinging of the left and right cranks, and the driving rod is driven to swing up and down by the central axis. Because it is an up and down riding mode, the left and right cranks can be doubled, thereby playing the role of a lever. The belt is driven to extend and retract by the driving rod, and the rotating wheel is driven to reset by the spring. Compared with the traditional bicycle driving structure, the present invention can realize single-side independent driving and double-side alternating driving. When driving, the previous pedaling circle action mode is changed to an up and down action mode. After the pedal is stepped on, it is automatically reset by the spring, which solves the problem of dead point position effort during traditional bicycle driving, saves the physical strength of the rider, and further improves the riding efficiency. The key is that it is easy to operate, which further meets the riding needs of different groups of people, especially people with leg disabilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall top view of the structure of the present invention.

[0014] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure in the AA direction.

[0015] Figure 3 Schematic diagram of the spring installation structure in an embodiment of the present invention.

[0016] In the figure: device housing 1, right drive rod 2, right crank 3, right spring 4, right belt 5, left rear bearing seat 6, right pedal 7, right rear platform 8, chain 9, right rotating wheel 10, rotating shaft 11, left rotating wheel 12, left rear platform 13, left pedal 14, left rear bearing seat 15, left belt 16, left spring 17, left crank 18, left drive rod 19, left middle shaft 20, front left bearing seat 21, front right bearing seat 22, front platform 23, right middle shaft 24, bearing 25, sprocket 26, buffer limit block 27, fixing block 28. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings:

[0018] like Figure 1-2 As shown, a double-flying linkage up and down riding lever-type driving device for a bicycle comprises a device housing 1, a left crank 18 and a right crank 3 arranged on the outside of the device housing 1, and a left pedal 14 and a right pedal 7 arranged on the left and right cranks; a front platform 23 is provided at the front end inside the device housing 1, and a front left bearing seat 21 and a front right bearing seat 22 are provided on the front platform 23, and bearings 25 are provided in the front left bearing seat 21 and the front right bearing seat 22, and a left middle shaft 20 is provided in the bearing 25 in the front left bearing seat 21, and one end of the left middle shaft 20 extends out of the device housing 1 and is connected to the left crank 18, and a left driving rod 19 is fixedly provided on the left middle shaft 20; a right middle shaft 24 is provided in the bearing 25 in the front right bearing seat 22, and one end of the right middle shaft 24 extends out of the device housing 1 and is connected to the right crank 3; a right driving rod 2 is fixedly provided on the right middle shaft 24, and a left rear side platform 13 and a right rear side platform 8 are provided at the rear end inside the device housing 1, and the left rear A left rear bearing seat 15 is provided on the side platform 13, and a right rear bearing seat 6 is provided on the right rear side platform 8. A bearing 25 is provided in the left rear bearing seat 15 and the right rear bearing seat 6. A rotating shaft 11 is provided in the bearing 25. A left rotating wheel 12 and a right rotating wheel 10 are provided on the rotating shaft 11. A flywheel is provided in the left rotating wheel 12 and the right rotating wheel 10. The center of the flywheel is fixedly connected to the rotating shaft 11, and the outer side of the flywheel is fixedly connected to the left and right rotating wheels. A left rotating wheel 12 is wound around the left rotating wheel 12. Belt 16 and left spring 17, the left belt 16 is connected to the left drive rod 19, and the head of the left spring 17 is connected to the front left bearing seat 21; the right belt 5 and the right spring 4 are wound around the right rotating wheel 10, the right belt 5 is connected to the right drive rod 2, and the head of the right spring 4 is connected to the front right bearing seat 22. A fixed sprocket 26 is provided on the outer side of the right rotating wheel 10, and a chain 9 is provided on the sprocket 26. The chain 9 passes through the device housing 1 and is connected to the flywheel on the rear axle of the bicycle.

[0019] like Figure 1-2As shown, a double-flying linkage up and down riding lever-type driving device for a bicycle, the left driving rod 19 and the right driving rod 2 have the same structure, the left and right driving rods are the whole rods that are bent twice to form an inverted "L"-shaped structure, the angles at the two bends are not less than 90°, the short rod ends of the left and right driving rods are welded and fixed to their respective middle shafts, and the long rod ends of the left and right driving rods are fastened to their respective belts; the left crank 18 and the right crank 3 have the same structure, the left and right cranks are two-section connecting rod structures, the angle between the two connecting rods is not less than 120°, the two connecting rods are tightened and fixed by fasteners, the angle between the two connecting rods is adjustable, the left and right middle shafts are connected to the pedals The center distance between the axes is not less than the center distance between the left and right central axes and the rotating shafts; the front platform 23, the left rear platform 13 and the right rear platform 8 are all welded and fixed to the device housing 1, and the front platform 23, the left rear platform 13 and the right rear platform 8 are arranged at the same height; the left rotating wheel 12 and the right rotating wheel 10 are both grooved wheels with double grooves, and the outer ring of the flywheel and the inner ring of the grooved wheel, and the inner ring of the flywheel and the outer ring of the rotating shaft form an interference fit; the sprocket 26 and the right rotating wheel 10 form a coaxial thread and are tightened and fixed; a buffer limit block 27 is provided on the front platform 23, and the buffer limit block 27 is arranged on the front platform 23 directly below the left and right driving rods.

[0020] like Figure 3 As shown, the spring in a double-flying linkage up and down riding lever-type driving device for a bicycle can also be arranged in the following manner: a fixing block 28 is provided on the inner wall at the rear end of the device housing 1, and the spring 4 and the spring 17 are both sleeved on the rotating shaft 11, one end of the spring 4 is fixedly connected to the inner side surface of the right rotating wheel 10, and the other end of the spring 4 is fixedly connected to the fixing block 28; one end of the spring 17 is fixedly connected to the inner side surface of the left rotating wheel 12, and the other end of the spring 17 is fixedly connected to the fixing block.

[0021] The present invention has a novel structure and a clear working principle. The left and right cranks swing up and down to drive the middle shaft to rotate, the middle shaft drives the driving rod to swing up and down, the driving rod drives the belt to stretch, and the spring drives the rotating wheel to reset. Compared with the traditional bicycle driving structure, the present invention solves the problem of the dead point position being laborious when driving a traditional bicycle, saves the physical strength of the rider, and further improves the riding efficiency. The key is that it is easy to operate, and further meets the riding needs of different groups of people, especially people with leg disabilities.

Claims

1. A double-flying linkage up-and-down riding lever-type driving device for a bicycle, comprising a device housing (1), a left crank (18) and a right crank (3) arranged outside the device housing (1), and a left pedal (14) and a right pedal (7) arranged on the left and right cranks; characterized in that: A front platform (23) is provided at the front end of the device housing (1), and a front left bearing seat (21) and a front right bearing seat (22) are provided on the front platform (23). Front bearings (25) are provided in the front left bearing seat (21) and the front right bearing seat (22). A left middle shaft (20) is provided in the front bearing (25) in the front left bearing seat (21), and one end of the left middle shaft (20) extends out of the device housing (1) and is connected to the left crank (18). A left driving rod (19) is fixedly provided on the left middle shaft (20). ); a right middle shaft (24) is arranged in the front bearing (25) in the front right bearing seat (22); one end of the right middle shaft (24) extends out of the device housing (1) and is connected to the right crank (3); a right driving rod (2) is fixedly arranged on the right middle shaft (24); a left rear platform (13) and a right rear platform (8) are arranged at the rear end inside the device housing (1); a left rear bearing seat (15) is arranged on the left rear platform (13); a right rear bearing seat (6) is arranged on the right rear platform (8); the left rear bearing seat ( A rear bearing is arranged in the right rear bearing seat (15) and the right rear bearing seat (6), a rotating shaft (11) is arranged in the rear bearing, a left rotating wheel (12) and a right rotating wheel (10) are arranged on the rotating shaft (11), a flywheel is arranged in the left rotating wheel (12) and the right rotating wheel (10), the center of the flywheel is fixedly connected to the rotating shaft (11), the outer side of the flywheel is connected and fixed to the left and right rotating wheels, a left belt (16) and a left spring (17) are wound around the left rotating wheel (12), and the left belt (16) is connected to the left driving rod (19) The left spring (17) is connected to the front left bearing seat (21); a right belt (5) and a right spring (4) are wound around the right rotating wheel (10); the right belt (5) is connected to the right driving rod (2); the head of the right spring (4) is connected to the front right bearing seat (22); a fixed sprocket (26) is provided on the outer side of the right rotating wheel (10); a chain (9) is provided on the sprocket (26); the chain (9) passes through the device housing (1) and is connected to the flywheel on the rear axle of the bicycle; The left driving rod (19) and the right driving rod (2) have the same structure. The left and right driving rods are a whole rod that is bent twice to form an inverted "L"-shaped structure. The angles at the two bends are not less than 90°. The short rod ends of the left and right driving rods are welded and fixed to their respective central shafts, and the long rod ends of the left and right driving rods are tightly connected to their respective belts. The left crank (18) and the right crank (3) have the same structure. The left and right cranks are two-section connecting rod structures. The two connecting rods have an angle of not less than 120°. The two connecting rods are tightened and fixed by fasteners. The angle between the two connecting rods is adjustable. The center distance between the left and right middle axes and the pedal axis is not less than the center distance between the left and right middle axes and the rotating shaft.

2. A double-flying linkage up and down riding lever-type driving device for a bicycle according to claim 1, characterized in that: The front platform (23), the left rear platform (13) and the right rear platform (8) are all welded and fixed to the device housing (1), and the front platform (23), the left rear platform (13) and the right rear platform (8) are arranged at the same height.

3. A double-flying linkage up and down riding lever-type driving device for a bicycle according to claim 1, characterized in that: The left rotating wheel (12) and the right rotating wheel (10) are both grooved wheels with double grooves, and the outer ring of the flywheel and the inner ring of the grooved wheel, as well as the inner ring of the flywheel and the outer ring of the rotating shaft, all form an interference fit.

4. A double-flying linkage up and down riding lever-type driving device for a bicycle according to claim 1, characterized in that: The sprocket (26) and the right rotating wheel (10) form a coaxial thread and are screwed and fixed.

5. The double-flying linkage up and down riding lever-type driving device for a bicycle according to claim 1, characterized in that: The front platform (23) is provided with a buffer limit block (27), and the buffer limit block (27) is arranged on the front platform (23) directly below the left and right driving rods.

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