| 摘要 |
PURPOSE:To provide an automatic jumping mechanism for a show case or a containing chamber which simplifies a mechanism as much as possible, reduces a cost, and facilitates simulation by a method wherein a main stem and three links are used, and the mechanism is formed with a drive axle and a rotary axle. CONSTITUTION:When a main stem 4 starts counterclockwise rotation around a main stem drive axle 5, a glass door 1 mounted on a main stem rotary axle 6 being the other end of the main stem 4 is raised as it draws a circular arc. In this case, a first link 7 rotatably secured to a portion slightly away from the drive axle 5 of the main stem 4 pushes upward the lower end of a glass door 1 through a second link 9 by means of a third link 9. The push up causes counterclockwise rotation of the upper end of the glass door 1 and forces rapid retraction of it is a show case or the rear of the ceiling of the interior of a ceiling, and enables prevention of collision of the glass door 1 with the ceiling. Further, with the progress of rotation of the main stem 4, push out of the third link 9 is increased, and the upper end of the glass door 1 is approximately linearly horizontally progressed on the whole and contained in the rear part of the ceiling. |
