| 摘要 |
<p>A self-inflating tire having a tire cavity (40) and a pump passageway (42) is disclosed. The pump passageway (42) has an inlet end (42a) and an outlet end (42b) and a valve device (80) connected to both ends. The valve device has a valve body (81) having a first, second and third chamber. The first chamber (206) is in fluid communication with the inlet end (42a) of the pump passageway (42). The second chamber (208) is in fluid communication with the outlet end (42b) of the pump passageway (42). The third chamber (205) has a channel (107) in fluid communication with the ambient air. A pressure membrane (90) is received within the valve body (81) and positioned to open and close the channel (107). Also, a valve device for a tire is disclosed. The valve device (80) has a first, second and third chamber (205, 206, 208). A first and second check valve is positioned in the first and second chamber (206, 208) which each have an outlet passageway. A first check valve is positioned in the outlet passageway of the first chamber (206) and a second check valve is positioned in the outlet passageway to the second chamber (208). A pressure membrane (90) is positioned to open and close the third chamber (205) and a spring (98) is received within the third chamber (205) and is positioned to exert force upon the pressure membrane (90).</p> |
