| 摘要 |
A coupling device for coupling a cover to a platform body of a scanner. The coupling device comprises two legs for attaching to the cover; a pivot shaft formed between the distal ends of the two legal a stopper coupled to the pivot shaft at a first predetermined angle; a pivot socket formed at the intersection top surface of the platform and the platform sidewall comprising a cavity, two vertical slots formed in the sidewall of the platform and extending to and penetrating the top surface of the platform for respectively receiving the two legs into the cavity, a horizontal slot formed in the sidewall of the platform for receiving the pivot shaft into the cavity, an upper engaging portion, and a lower engaging portion. When the legs and pivot shaft are received into the cavity, the upper engaging portion, by contact with the pivot shaft, prevents the legs from escaping the cavity during vertical movement of the legs, and the lower engaging portion, by contact with the stopper, prevents the opening of the cover beyond a second predetermined angle. Furthermore, the height of the horizontal gap is slightly larger than the diameter of the pivot shaft, and smaller than the combined length of the diameter of the pivot shaft and the stopper when the legs are in a vertical attitude, such that the pivot shaft and stopper cannot slip out of the horizontal gap during vertical movement of the legs.
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