| 摘要 |
PROBLEM TO BE SOLVED: To provide a shaft coming-off preventing mechanism, which surely actuates while rotating or against vibration or shock, and which allows pulling- out of a shaft arbitrarily and simply. SOLUTION: An annular locking groove 1a is provided on the outer periphery at the end of a shaft 1; and a D-cut part 1c is disposed on one side of the end 1b which constitutes the locking slot 1a, and a locking step part 1d is disposed on the opposite side. A coming-off preventing member 4 is made of an elastic material, and is composed of an annular member base part 4a of and locking nails 4b. The base part 4a is caught between an anti-open-end face 2a and a step part 3a of a bearing housing 3 immobilized. Further, the locking nails 4b are disposed at approximately equal intervals inside of the annular member base part 4a, and are bent in a dog-leg shape toward the bottom direction of the bearing housing 3, respectively.
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