A chainless bicycle variable speed transmission device
A technology of variable speed transmission and bicycle, applied in the direction of rotary transmission, wheel transmission, vehicle gearbox, etc., can solve problems such as the mechanism of adjusting the speed change is easy to break, difficult to maintain, and the speed adjustment mechanism cannot work normally.
Inactive Publication Date: 2015-11-25
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
[0002] The existing bicycle speed change mechanism is composed of multi-layer chain teeth, and the complex speed change mechanism makes the structure more complicated, especially the mechanism for adjusting the speed change is particularly easy to break; After repairing, you must go to the special maintenance department, and it is difficult to repair by yourself.
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[0032] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.
[0033] For the convenience of description, "up", "down", "left" and "right" referred to below are consistent with the up, down, left and right directions of the drawings themselves, but they do not limit the structure of the present invention. The ring of concave teeth closest to the center of the concave tooth surface gear is called the first ring of concave teeth, and the second ring, the third ring, the fourth ring, and the fifth ring are called radially outward. The concave gear installed on the bottom shaft is called the first concave gear, the concave gear installed on the rear axle is called the second concave gear; the pinion that meshes with the first concave gear is called The first pinion, the pinion that meshes with the second concave gear is called the second pinion; the spring installed on the side of the mounting plate is called the fi...
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The invention relates to a chain-free bike speed transforming transmission device. The device comprises a first concave gear surface gear, a second concave gear surface gear, a first small gear, a second small gear and a driving shaft, wherein the first concave gear surface gear is arranged on a middle shaft of a vehicle frame, synchronously moves during connection and is provided with a plurality of circles of driving rings; the second concave gear surface gear is arranged on a rear shaft of the vehicle frame, synchronously moves during connection and is provided with a plurality of circles of driven rings; the first small gear is meshed with the first concave gear surface gear; the second small gear is meshed with the second concave gear surface gear; one end of the driving shaft is connected with the first small gear and synchronously moves with the first small gear; the other end of the driving shaft is connected with the second small gear and synchronously moves with the second small gear; the driving shaft is fixedly arranged on a vehicle body through a slide bearing block; and the small gears can glidingly move from one circle of driving rings to one circle of driven rings on the concave gear surface gears. The device has the characteristics of simpler structure, easier realization, easier operation and the like than the traditional bike gear-shift mechanism.
Description
Technical field [0001] The invention relates to a variable speed transmission device, in particular to a chainless bicycle variable speed transmission device. Background technique [0002] The existing bicycle speed change mechanism is composed of multiple chain teeth, and the complicated speed change mechanism makes the structure more complicated, especially the speed adjustment mechanism is particularly prone to damage; the speed adjustment mechanism of the bicycle that is bought does not work normally after less than a year. After that, the repair must go to the special repair part, which is difficult to repair by yourself. [0003] The invention has the characteristics of simpler, easier to implement, easier to operate, and easier to maintain than the traditional bicycle speed change mechanism. Summary of the invention [0004] The problem to be solved by the present invention is to provide a variable speed transmission device that is small in size, simple in structure, and can...
Claims
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IPC IPC(8): B62M11/04B62M17/00
Inventor 王丰赵丽婷
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS