| 摘要 |
A fuel tank cap structure which enables a cover member to be readily attached to a casing body. The fuel tank cap includes the casing body and the cover member that is rotatable in one direction relative to the casing body via a ratchet mechanism when a torque of or above a predetermined level is applied to the cover member. The cover member has fitting projections that are held by an outer ring member of the casing body. The outer ring member has a plurality of slits, which cause the outer ring member to be elastically deformed when riding over the fitting projections, thereby facilitating the engagement of the fitting projections with the outer ring member.
|
