| 摘要 |
<p>A resin-made belt pulley (p) of which a rim section (2) around which a belt is passed and a web section (3) provided radially inside the rim section (2) and fitted on a rotary shaft (1) are formed in one unit. The point (30) where the web section (2) is fitted to the rotary shaft (1) is offset (12) relative to the center (8) of the rim section (2) in the axial direction, and the web section (3) has a vertical web member (7) extending radially outward from the fitting point (30) and an inclined web member (9) so inclined as to connect the vertical web member (7) and the center (8). Since the belt load exerted on the rim section (2) can be borne at the center (8), the deformation of the rim section (2) by the belt load can be small even if the pulley (p) is made of resin whose rigidity is poor.</p> |
