| 摘要 |
PROBLEM TO BE SOLVED: To enhance holding power and strengthen a structure. SOLUTION: In a cap-like retainer comprising a front wall and a sidewall 22, a pair of parallel slits 23 closed at both their ends are formed in the side wall 22 used as a peripheral wall and an arm piece 24 retained at both its ends is formed between the slots. The arm piece 24 presses firmly against a locking protrusion 25 formed on its inside peripheral surface against a cavity part to become a fixed object, because both its ends are retained and is strengthened to eliminate its free end, while improving its holding power.
|
