| 摘要 |
PURPOSE: A gear supporting structure is protected from being fused, thereby forming a stable layout. CONSTITUTION: A gear supporting structure comprises a shaft integrated gear, an only gear, and a clearance reserver. In the clearance reserver, The only gear(34) has a plurality of rugs(35) engaged with a roller(38) and a racer(36) to control an axial shift. When a torque is loading on the only gear(34) to rotate it relatively with the shaft integrated gear(32), the only gear(34) supports the roller(38) and the racer(36) by inward radial rugs(35) to have an appropriate clearance(C). Thus, a gear supporting structure is protected from being fused, thereby forming a stable layout.
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