Air control mechanism and sphygmomanometer

Abstract

An air control mechanism and a sphygmomanometer including the air control mechanism are provided. The air control mechanism includes a first housing, a second housing, a tower-shaped piston, and an intake-exhaust mechanism. In an intake state, air in the first chamber sequentially flows through the flow groove, presses against the elastic thin plate, flows through the stepped hole and flows to the exhaust passage through the guiding groove. In an exhaust state, air sequentially flows through the flow passage and the exhaust passage to the guiding groove.

CPC Classifications