| 摘要 |
PROBLEM TO BE SOLVED: To provide a helical teeth belt driving device capable of suppressing oblique travel of a belt due to thrust load and reducing meshing shock greatly to reduce noise and having excellent mass production property. SOLUTION: In this helical teeth belt driving device 100 constituted by the helical teeth pulley 110 and the helical teeth belt 120 meshing with the helical teeth pulley 110, the helical teeth pulley 110 is provided with a barrel type tooth tip whole peripheral face 111 in which diameter D1 of circle at a tooth tip is gradually reduced toward both side ends Ws from a central part Wc of tooth width. COPYRIGHT: (C)2005,JPO&NCIPI
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