| 摘要 |
PURPOSE:To use a single air intake valve commonly in both dispersion and replacement methods by selecting using a switch plate either a mode in which air is supplied to two inlet/exhaust ports alternately, then held therein and discharged and a mode in which air of the same pressure is supplied to the two inlet/exhaust ports simultaneously. CONSTITUTION:In a first mode (replacement method), an intake valve is stopped with the recess of a switch plate 3 not communicated with the inlet/exhaust ports 8, 9 of a fixed plate 1 and a pressure adjusting hole not communicated with a pressure adjusting hole 10, and a motor 4 is made to carry current so as to rotate a rotating disc 2; then the inlet/exhaust ports 8, 9 and the recess of the rotating disc 2 are repeatedly communicated with and shut off from each other and air is fed to feed 13 and exhaust 14 pipes alternately via the inlet/exhaust ports 8, 9, and the air chambers of the two air systems of the air mat alternately repeat expansion. In a second mode (dispersion method), the switch plate 3 is rotated up to a position at which the recess of the switch plate 3 is communicated with the inlet/exhaust ports 8, 9 of the fixed plate 1 and the pressure adjusting hole of the switch plate 3 is communicated with the pressure amount adjusting hole 10 of the fixed plate 1. |
