| 摘要 |
The present invention relates to a variable chain belt of a nonstop variable speed gear device for a bicycle. The variable chain belt of a nonstop variable speed gear device for a bicycle changes a rotational radius in a pulley while an insertion position in an inclined belt groove of the pulley is changed by an increase and a decrease in a width, and comprises: a pair of chain plates on left and right sides wherein inclined units becoming more inwardly inclined towards lower ends thereof from upper ends thereof are symmetrically formed on outer surfaces thereof; a link plate inserted, linked, and mounted between the chain plates; a C-shaped rotary arm rotatably installed by penetrating the link plate and extended towards the inclined units of the chain plates; and a pair of width changing bodies which are formed on front ends of both sides of the rotary arm, supported by the rotary arm, change a vertical position along the inclined units, and increase and decrease the overall width of the variable chain belt. According to the present invention, a stable nonstop variable speed operation can be performed for a long period of time. A structure is simple to facilitate manufacture and reduce manufacturing costs. |
