Patent ID: 11868059
Assignee: SHARP KABUSHIKI KAISHA
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An optical scanning device comprising an optical component and an optical box that houses the optical component, wherein
the optical box includes:
a box main body having a bottom wall and a frame-shaped side wall erected from a peripheral edge portion of the bottom wall; and
a cover member having a top wall that closes an upper opening of the box main body and a frame-shaped first fitting wall portion that is outer-fit to the frame-shaped side wall,

the cover member further comprising:
a first engaging portion that is formed on the frame-shaped side wall;
a second engaging portion that is formed on the frame-shaped first fitting wall portion in an elastically deformable manner, the second engaging portion being engaged with the first engaging portion, thereby locking the cover member to the box main body;
a vertical wall that is erected on the box main body so as to form a space inside the first engaging portion, and that has both of its side end portions coupled to the frame-shaped side wall; and
a first barrier wall that is protruded from the top wall toward the bottom wall so as to enter a space between the first engaging portion and the vertical wall, and that has both of its side end portions coupled to the frame-shaped first fitting wall portion.