| 摘要 |
PURPOSE:To prevent the wrench opening by making the thickness thinner at the edge part on the front surface side at the edge part of the door of a key storage box and forming the edge part thinner on the front surface side at the edge of the opened port part of the box body which is opposed to the edge part. CONSTITUTION:A curved part 7 whose front surface side is recessed into an arcuate recessed form is formed at the edge part of the door 3 of a key storage box, and the edge part of the door 3 is formed thin. Further, a curved surface part 8 whose front surface side is recessed into an arcuate form is formed at the edge part of a box body 1, and the edge part of the opened port part 2 of the box body 1 is formed thin. |
