CONTINUOUSLY VARIABLE TRANSMISSION

PURPOSE: A continuously variable transmission is provided to rapidly response to the variation of the load, to smoothly transfer the rotary force, and to achieve continuously variable shifting through a simple device, so that the production cost and durability are improved. CONSTITUTION: A continuously variable transmission comprises: a reverse connecting gear(212) to be mounted rotatably on an output carrier shaft(124); a first synchronizer cone(214) to be united with the reverse connecting gear as one body and to be mounted rotatably on the output carrier shaft; a forth connecting gear(216) to have some distance with the first synchronizer cone and to be united with the output carrier shaft as one body; a first forth transfer gear(220) to be linked to the forth connecting gear and to be mounted rotatably on a fixing shaft(218); a second forth transfer gear(222) to have some distance with the first forth transfer gear and to be mounted rotatably on the fixing shaft; a second synchronizer cone(224) be united with the second forth transfer gear and to be mounted rotatably on the fixing shaft; a forth and reverse output gear(226) to be linked to the second forth transfer gear and the reverse connecting gear and to be united with an output shaft(126) as one body; a first clutch hub(228) to be mounted between the first synchronizer cone and the forth connecting gear and to be united with the output carrier shaft as one body; a first sleeve(230) to be mounted on the outer of the first clutch hub; a first synchronizer ring(232) to be mounted rotatably on the first synchronizer cone; a second clutch hub(234) to be united with the first forth transfer gear as one body and to be mounted rotatably on the fixing shaft; a second sleeve(236) to be mounted on the outer of the second clutch hub; a second synchronizer ring(238) to be mounted rotatably on the second synchronizer cone.