Bicycle with linking lever and cam

Abstract

The invention discloses a bicycle with linking lever and cam, comprising a vehicle frame, a front vehicle wheel, a back vehicle wheel and a vehicle wheel drive device. The vehicle wheel drive device cThe invention discloses a bicycle with linking lever and cam, comprising a vehicle frame, a front vehicle wheel, a back vehicle wheel and a vehicle wheel drive device. The vehicle wheel drive device comprises a lever, swinging rods, a drive wheel and a speed-change mechanism, wherein one end of the lever is a linear drive force-application end, and the other end is movably connected on the vehicleomprises a lever, swinging rods, a drive wheel and a speed-change mechanism, wherein one end of the lever is a linear drive force-application end, and the other end is movably connected on the vehicle frame; the lower end of each swinging rod is articulated with the lever, a roller is arranged at the upper end of each swinging rod, and the middle lower end of a front swinging rod is movably connecframe; the lower end of each swinging rod is articulated with the lever, a roller is arranged at the upper end of each swinging rod, and the middle lower end of a front swinging rod is movably connected with the middle lower end of a back swinging rod through a hinged bar; the speed-change mechanism comprises a drive gear ring, an intermediate wheel, a driven gear ring, a triangular swinging platted with the middle lower end of a back swinging rod through a hinged bar; the speed-change mechanism comprises a drive gear ring, an intermediate wheel, a driven gear ring, a triangular swinging plate and a pull rod. A contour curved surface which is movably connected with the roller is arranged in the drive wheel, and is provided a farthest lower pull surface, a farthest upper pull surface, a tre and a pull rod. A contour curved surface which is movably connected with the roller is arranged in the drive wheel, and is provided a farthest lower pull surface, a farthest upper pull surface, a transition surface and a transition surface of delay angle, wherein the farthest lower pull surface and the farthest upper pull surface are symmetrically arranged taking the wheel shaft as the center; aansition surface and a transition surface of delay angle, wherein the farthest lower pull surface and the farthest upper pull surface are symmetrically arranged taking the wheel shaft as the center; and the transition surface is used for communicating the farthest lower pull surface and the farthest upper pull surface. The invention cancels a double foot lost motion part of a crank mechanism to sand the transition surface is used for communicating the farthest lower pull surface and the farthest upper pull surface. The invention cancels a double foot lost motion part of a crank mechanism to save more labor, thereby the utilization rate of force achieves a favorable state.ve more labor, thereby the utilization rate of force achieves a favorable state.

Description

technical field [0001] The invention relates to a bicycle, in particular to a lever-cam linkage bicycle. Background technique [0002] Bicycles neither consume energy nor cause environmental pollution, and are widely used by ordinary people as a means of transportation. Especially today, when higher requirements are placed on energy and environmental protection, they are favored by the society. However, so far, the bicycles currently on the market all adopt the driving structure of cranks and sprockets, resulting in many moving parts rotating in a circle, resulting in high failure rate, difficult maintenance, and the defects of frequent oil injection and replacement. [0003] The Chinese patent No. ZL200620141925.9, which has made great improvements to the above defects, discloses a lever-ratchet-linked bicycle, which completely abandons the crank-link mechanism and related components, and replaces the traditional driving method with the up-and-down movement of both feet. T...

AI Technical Summary

Problems solved by technology

However, its structure is still relatively complex, and requires high precision, easy to wear, difficult to adjust and repair, and has a short service life.

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