ROTATION TRANSMISSION MECHANISM FOR HUMAN POWER VEHICLE AND HUMAN POWER VEHICLE AND BICYCLE WITH THE SAME

摘要

There is provided an easy-to-assemble/disassemble rotation transmission mechanism for human power vehicle excellent in maintainability, mass productivity, assembling workability, space saving, and versatility in which impact energy or undue input energy generated by a load applied externally during initial motion or running is absorbed and stored surely, load on the human body is reduced sharply, stored energy can be utilized effectively when the input energy decreases or interrupts while exhibiting excellent reliability and efficiency in transmission of rotation, and the weight is reduced through a simple arrangement with small number of components. The rotation transmission mechanism includes an internal rotary member (2) having outer circumferential protrusions (3b) on the outer circumference of the rotating shaft (51);an external rotary member (4) composed of a side board portion (4a) being applied rotatably over the rotating shaft (51), an outer tube portion (4b) standing on the outer circumference of the side board portion, and inner circumferential protrusions (4c) protruding from the side board portion (4a) and/or the outer tube portion (4b) on the inner circumferential side of the outer tube portion and arranged alternately to the outer circumferential protrusions (3b);and an elastic deformation portion (5) arranged between the outer circumferential protrusions (3b) and the inner circumferential protrusions (4c).