| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem that unexpected impulsive sounds might sometime occur when a door body is opened and closed for taking out mails or the like in a mailbox. SOLUTION: The door body 3 for taking out mails or the like is openably fitted to the opening section 2 of a box main body 1 with a shaft body 4, and a rotation control device 5 regulating the opening speed of the door body 3 is provided on the door body 3.
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