| 摘要 |
PURPOSE:To prevent hindrances in the rotary motion of a rotary member caused by burrs occurring during the press working by providing a recess undercut at the forward end of a drop-off preventing member. CONSTITUTION:A latching portion 1c making contact with a chassis base body 3 after assembly, an undercut (recess groove) 1b more depressed one step than the latching portion 1c, and a sloping portion 1d formed continuously in the tip end direction from the latching portion 1c, are provided at the hooked forward end of the drop-off preventing member 1a. A rotary member 1 provided with the drop-off preventing member 1a having the above described construction can obtain a smooth rotary motion without receiving from burrs such influences that the hook-shaped portion is hooked to the burr part 32 upon the rotary motion of the rotary member 1 by setting the depth of the undercut 1b sufficiently deeper than the height of the burr part 32, despite the existence of the burr part 32, in the periphery of the hole part 3b of the chassis base body 3. |
