| 摘要 |
A collapsing device for a desk includes a main frame provided with two longitudinal rods respectively disposed with projections and a pivotal hole. Two guide frames are respectively fixed at opposite upper corners of a front plate and bored with a through channel extending backward and slanting upward to correspond with the pivotal hole. Two pivotal wheels are respectively received in the guide frames and actuated to shift therein, and two leg frames are pivotally assembled between the rear side of the front plate and the guide frames, respectively having an upper side bored with plural fitting slots. Thus, when the longitudinal rods are pivotally turned downward or upward by the pivotal wheels, with the projections of the longitudinal rods respectively fitted in or pulled out of the fitting slots of the leg frames, the desk can be stretched or collapsed.
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