PURPOSE: To reduce the configuration spaces of first and second rollers and a driving source by using the first and/or second rollers as motor pulleys, into which the driving source for rotation is incorporated, pushing and holding a cable between both rollers and forwarding the cable.

CONSTITUTION: First rollers 10 are formed in rollers freely rotatable around the shafts 10a of the rollers 10, and a second roller 12 is used as a motor pulley. A motor for rotation driving and a power transmission mechanism are incorporated into the second roller 12. When the second roller 12 is turned and driven under the state, in which a cable is pushed and held among the first rollers 10 and the second roller 12, the first rollers 10 are revolved while following the turn. These rollers 10, 12 are faced oppositely and separated and disposed so that the axial direction P is made approximately parallel. Accordingly, the configuration spaces of the first and second rollers 10, 12 and the driving source can be reduced.