Abstract: An air valve with a SMA wire for switching is located in an air chamber in which at least two air holes are formed. The air valve comprises a base, an air piston, a driving component, and the SMA wire. The base is provided with two supporting blocks, and two conduction components near one of the two supporting blocks. The air piston determines a ventilation state of one of the two air holes. The air piston comprises a rod body on the two supporting blocks and with a first triggering part, and a spring sleeved on the rod body. The driving component is sleeved on the rod body and with a second triggering part matched with the first triggering part. The SMA wire is connected with the two conduction components and the driving component, and is turned by the supporting block opposite to the two conduction components.

Abstract: An air valve with a SMA wire for switching is located in an air chamber in which at least two air holes are formed. The air valve comprises a base, an air piston, a driving component, and the SMA wire. The base is provided with two supporting blocks, and two conduction components near one of the two supporting blocks. The air piston determines a ventilation state of one of the two air holes. The air piston comprises a rod body on the two supporting blocks and with a first triggering part, and a spring sleeved on the rod body. The driving component is sleeved on the rod body and with a second triggering part matched with the first triggering part. The SMA wire is connected with the two conduction components and the driving component, and is turned by the supporting block opposite to the two conduction components.