Modular configuration for pedal drive systems by means of independent cranks with no dead center

Abstract

Mechanical improvement consisting of providing with a modular configuration a pedaling system without cycle dead centers based on independent cranks that by means of links moves a power plate separated from and parallel to the bottom bracket spindle; The above mentioned modular configuration brings a substantial optimization in maintenance and after-sales jobs as well, which are the principal obstacles for the industrialization and marketing of this type of mechanisms; besides a reduction is achieved in the number of pieces, as well as considerable advantages in the industrialization and in the final price of the product; and finally, there is achieved a minor friction that redounds to a major mechanical efficiency and therefore to a major sports yield for the user.

Description

technical field [0001] The present invention consists of a series of mechanical improvements, primarily applicable to the manufacture and use of bicycle pedals on the basis of eliminating dead spots, the operation of which has been shown to be biomechanically superior to conventional bicycle cranks and chainrings. Background technique [0002] Optimal pedal biomechanics utilize independent cranks, each running slower when pedaling down than when pedaling up. will be next. The result of this kinematic principle is that the system requires more force on the human leg when the leg is extended by the push-down than when the leg is bent by the push-up, which better coordinates the leg muscles when pedaling the bicycle forward potential. [0003] Improvements in the mechanical structure of the above-mentioned pedal system that utilizes the best biomechanics will be proposed as a patent. This system will replace the traditional bottom bracket and crank, and can be connected to th...

AI Technical Summary

Problems solved by technology

[0039] Therefore, it is feasible that the system does not provide after-sales service performed by skilled technicians, because in most cases that means additional costs: dismantling of the bicycle, sending the unit to a technical service point, processing that may be necessary for after-sales service Measures, return shipping and final loading of parts onto bikes etc.

In addition, if not properly maintained, the life of the product will be shortened, which will occasionally increase the cost of replacement parts

[0040] Moreover, if each distribution center must provide these technical services, it will increase the final retail cost of the product

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