| 摘要 |
The present invention relates to a position controlling tension device, comprising a pulley unit, which is wrapped with a belt; a weight unit, which is installed so that the pulley unit can rotate; a fixing unit, which fixes a position; and a driving unit, which is coupled to the fixing unit and connected to the weight unit in order to move the weight unit for controlling the position of the pulley unit. Therefore, the position controlling tension device prevents the belt from rolling improperly on the pulley unit. |
