Patent ID: 8025470
Filing Date: 2011-09-27
Classification: B60P

Abstract:
1. A pay-out and take-up device for a tightener, in which a rotatable belt axis ( 2 ) is provided on a holder ( 1 ) of the tightener, one end of the belt axis ( 2 ) extends out of the holder ( 1 ), the device includes a casing ( 3 ) fixedly connected to a side of the holder ( 1 ) and a worm ( 4 ), a worm axis ( 4 b ) and a worm wheel ( 5 ) set within the casing ( 3 ), the worm wheel ( 5 ) is fixedly connected to an extension end of the belt axis ( 2 ), the worm axis ( 4 b ) is provided on a side of the worm wheel ( 5 ) and could move in an axial direction thereof within the casing ( 3 ), the worm ( 4 ) is covered on the worm axis ( 4 b ) and fixedly connected to the worm axis ( 4 b ), characterized in that, a guide mechanism is placed between the casing ( 3 ) and the worm ( 4 ) or between the casing ( 3 ) and the worm axis ( 4 b ) in which the worm axis ( 4 b ) could move in the axial direction thereof when the worm axis ( 4 b ) rotates, the worm axis ( 4 b ) or the worm ( 4 ) could be detached from the guide mechanism when the worm ( 4 ) is engaged with the worm wheel ( 5 ), a power mechanism ( 12 ) is further provided on the holder ( 1 ), and a transmission mechanism is provided between the power mechanism ( 12 ) and the worm axis ( 4 b ) for transmitting power.