Magnetic roller

Abstract

The present invention provides an improved structure of a magnetic roller. The magnetic roller has a pull rope brake set, mainly including left and right drive gears, both of which are assembled onto the main disk nearby the swinging end of the left and right swinging magnetic disks. The left and right drive gears are engaged through the gear tooth. The pull rope's coupling portions are assembled onto left and right drive gears corresponding separately to swinging end of left and right swinging magnetic disks. The pull rope includes first and second pull ropes, the first pull rope being used to link the pull rope's coupling portion of the left drive gear and the swinging end of right swinging magnetic disk, while the second pull rope is used to link pull rope's coupling portion of right drive gear and the swinging end of left swinging magnetic disk.

1 . A magnetic roller, comprising:
 a main disk, said main disk having a central axle seat;   a central axis being assembled into a bearing as said central axle seat of said main disk;   a freewheel;   left and right swinging magnetic disks being mounted symmetrically on a same side of said main disk through an assembly end and having magnetic surfaces placed opposite to an interior magnetic surface of said freewheel, said left and right swinging magnetic disks having an elastic member and swinging ends, said elastic member resetting the swinging ends;   pull ropes, driving the swinging ends of said left and right swinging magnetic disks and comprising a first pull rope and a second pull rope arranged in a cross way, said first pull rope having a coupling portion linking the left drive gear and the swinging end of the right swinging magnetic disk, said second pull rope having a coupling portion linking the right drive gear and the swinging end of left swinging magnetic disk; and   a brake set   comprising left and right drive gears, the gears being assembled onto said main disk nearby the swinging ends of the left and right swinging magnetic disks, the left and right drive gears being engaged through a gear tooth and rotating in opposite directions, at least one drive gear being provided with a driven portion, the coupling portions of said pull ropes being assembled onto said left and right drive gears corresponding separately to the swinging ends of left and right swinging magnetic disks   
   
   
       2 . The magnetic roller defined in  claim 1 , wherein said left and right drive gears are comprised of inner and outer pedestals, the inner pedestals being assembled within said main disk, the outer pedestal being outside of said main disk, the inner and outer pedestals being linked by a locating portion, said gear tooth being placed on the inner pedestal, said driven portion being placed on outer pedestals. 
   
   
       3 . The magnetic roller defined in  claim 1 , wherein the driven portion is comprised of an arc trough and a locating slot at one end of said arc trough, the driven portion of left and right drive gears being symmetrical the assembly portions being set on said main disk corresponding to said driven portion of the left and right drive gears. 
   
   
       4 . The magnetic roller defined in  claim 1 , wherein said elastic member of said left and right swinging magnetic disks is assembled between swinging ends of the left and right swinging magnetic disks. 
   
   
       5 . The magnetic roller defined in  claim 1 , wherein said bearing for said central axle seat is an axially located bearing. 
   
   
       6 . The magnetic roller defined in  claim 1 , wherein the assembly ends of said left and right swinging magnetic disks are installed onto a same pin joint portion of said main disk.