| 摘要 |
A controller for changeable pedaling system of a bi-directional pedaling bicycle is provided. The controller for changeable pedaling system includes: changing stoppers formed to be rotatable around fixing shafts arranged in a carrier with a predetermined interval, each having a first protrusion pin formed at one side of an end near the fixing shaft, and a second protrusion pin at the other side of the other end; a slide ring connected to the first protrusion pins of the changing stoppers and connected to a sun gear being slidably rotatable, for setting the changing stoppers of the carrier to a ratchet tooth of a fixing housing and a ratchet tooth portion of the sun gear according to the rotation of the sun gear; an operation lever controllable from the outside, having rotatable restoring force with being connected to a shaft of a lever gear formed in one side of the fixing housing; a first control ring having inner slant protrusions in an inner flange and outer slant protrusions in an outer flange, with a predetermined interval, the first control ring to be rotatable being engaged with the lever gear; a second control ring having a stopper bar controlling the operation lever and two-sided slant protrusions along the inner circumference with a predetermined interval, the second control ring being elastically coupled to constraint the first control ring, thereby transmitting elastic force toward the second protrusion pins of the changing stoppers; and a third control ring having slipping slant protrusions in the inner circumference, the third control ring being installed to be horizontally movable by the first control ring to constraint the second protrusion pins of the changing stoppers, thereby preventing the changing stoppers from being engaged with the ratchet tooth of the fixing housing.
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