| 摘要 |
PURPOSE:To surely prevent the leakage of a tire pressure, by constituting control valves installed in the passage of a tire autoinflator device which feeds air, having a proper pressure, into a tire through an air passage in a hub so that the two control valves are installed both sides, interposing an intermediate chamber between. CONSTITUTION:The compressed air from an air compressor 27 is supplied either high or low compressed air into a relay valve 33 side by switching a magnetic valve 32. Then, the air is introduced into the second air chamber 5 of a control valve 1 through the air passage 23 of an axle 21, a vacant chamber 24 and an air passage 15, and introduced into an intermediate chamber 4 by pushing open a check valve 9. Further, the compressed air is allowed to flow into a first air chamber 2 by pushing open a first diaphragm valve 3, and introduced into a tire 18 through a filter 36 and a valve 37. After the completion of expansion of the tire 18, the air pressure in the air chamber 5 is lowered, and a second diaphragm valve 6 is opened, and the air in the intermediate chamber 4 is discharged into the air at a breath, and the valve 3 is surely closed. |
