| 摘要 |
PURPOSE:To release the interface press-contacting force between a stationary plate brick and a sliding plate brick by so constituting as to engage the inside circumference of a gear ring and the outside circumference of a sliding fitting by a projection and a vertical groove, and approaching the bottom face of the slide plate fitting to the bottom face of a spring case by means of a screw mechansim thereby compressing a spring. CONSTITUTION:The sliding opening-closing device is so constituted that the inside circumference of a gear ring 10 is rotatably supported by the outside circumference of a stationary plate fitting 9 holding a stationary plate brick 2 while the vertical load exerted upon the ring 10 is being supported, that a spring case 14 is provided removably and openably on one side by inclining below the ring 10, and that the top surface of the brick 3 is press-contacted with the under surface of the brick 2 by pressing a sliding plate fitting 18 containing a sliding plate brick 3 upward by means of the spring 17 in the case 14, whereby the brick 3 is slidingly rotated. Here, the inside circumference of the ring 10 and the outside circumference of the fitting 18 are engaged by a projection and a vertical groove and the bottom face of the fitting 18 is approached to the bottom of the case 14 by a screw mechanism, whereby the spring 17 is compressed and the interface press-contacting force between the under surface of the brick 2 and the top surface of the brick 3 is released. |
