| 摘要 |
PROBLEM TO BE SOLVED: To provide a storage box including rollers on the outside surface of the bottom plate of a drawer portion, which suppresses the horizontal shift of the drawer portion. SOLUTION: A box bottom plate has an inside surface provided with a pair of rolling surfaces 23 extending back and forth of a box portion. The rolling surface 23 is provided with a flat surface 23a extending back and forth of the box portion, and is formed with an inclination surface 23b inclined upward relative to the flat surface 23a, in the width direction and toward the center of the box bottom plate 11 of the rolling surface 23. The inclination surface 23b is formed so as to have a maximum value of the length Z1 in the width direction, which is larger than the gap distance Z2 between the inside surface of the box-side plate and the outside surface of the drawer-side plate of the drawer portion. Further, the maximum value of the vertical length H between the uppermost top T of the inclination surface 23b and the flat surface 23a is set smaller than the radius R of a drawer roller 68 of the drawer portion. COPYRIGHT: (C)2010,JPO&INPIT
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