Who have to go on a journey because the son wishes to loose his windup on his back, and the father and son meet a lot of people along the way, toys, and this rat, or something like it, who follows them? I think the movie title is like "... and his Son" or something like that.

Please help me.

The Mouse and His Son?

The Mouse and His Child (1977)
IMDb review:
A toy wind-up mouse and his child awaken to consciousness in a toy shop after hours. "Papa, where are we? What are we?" asks the child mouse. "I don't know, son," is all the father can offer. They learn that they are toys and must do what they are intended to do: be wound up and walk in a circle. The child mouse is distraught; he doesn't want to go out into the world and wants to stay in the toy shop and have a family with the other toys. They fall off the shelf and are broken and later taken out with the trash. In one of the movie's more poignant moments, the mouse child asks, "Papa, is THIS the world?" while they are helplessly caught in a pile of trash. "I hope not," answers the father. They wind up being found by Manny the Rat, a wonderfully crafted villain who enslaves toys to do his bidding until they are old and of no use. In a particularly horrific scene, an old windup donkey is unhinged into spare parts after collapsing from exhaustion. The mouse and his child spend the rest of the movie trying to escape from Manny and become "self-winding" so that they no longer have to depend on someone for their well-being.

The Mouse and His Child (1977) - IMDb

Here's the complete movie on YouTube:
http://www.youtube.com/watch?v=p2XfzrRl3fs