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US 12,575,747 B2Granted
Air control mechanism and sphygmomanometer
AssigneeShenzhen Jamr Technology Co., Ltd.
InventorsYingxiang Cao, Liming Wang
Life of this patent
Estimating the term…
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.
Claims10
An air control mechanism, comprising:
- a first housing having a flow passage configured to be connected to a cuff;
- a second housing connected to the first housing, wherein an end surface of the first housing facing the second housing defines a flow groove, an end surface of the second housing facing the first housing defines a guiding groove;
- a tower-shaped piston having at least one first chamber in communication with the flow groove, wherein the piston is mounted to the second housing and disposed between the first housing and the second housing, the piston defines an exhaust passage extending along an axis of the piston and communicating with the flow passage, a side surface of the piston facing the first housing defines at least one stepped hole, the stepped hole has one end communicating with the guiding groove, and one other end spaced apart from the flow groove, and the piston is provided with an elastic thin plate at a periphery of the stepped hole;
- an intake-exhaust mechanism configured to intake airflow toward the flow passage or exhaust airflow along the flow passage to the exhaust passage, wherein the intake-exhaust mechanism is configured in such a way that 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, and in an exhaust state, air sequentially flows through the flow passage and the exhaust passage to the guiding groove.
1 more element
A sphygmomanometer, comprising:
- a cuff;
- and
- an air control mechanism connected to the cuff, wherein the air control mechanism comprises:
- a first housing having a flow passage configured to be connected to a cuff;
- a second housing connected to the first housing, wherein an end surface of the first housing facing the second housing defines a flow groove, an end surface of the second housing facing the first housing defines a guiding groove;
- a tower-shaped piston having at least one first chamber in communication with the flow groove, wherein the piston is mounted to the second housing and disposed between the first housing and the second housing, the piston defines an exhaust passage extending along an axis of the piston and communicating with the flow passage, a side surface of the piston facing the first housing defines at least one stepped hole, the stepped hole has one end communicating with the guiding groove, and one other end spaced apart from the flow groove, and the piston is provided with an elastic thin plate at a periphery of the stepped hole;
- an intake-exhaust mechanism configured to intake airflow toward the flow passage or exhaust airflow along the flow passage to the exhaust passage, wherein the intake-exhaust mechanism is configured in such a way that 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, and in an exhaust state, air sequentially flows through the flow passage and the exhaust passage to the guiding groove.
4 more elements
Dependencies are inferred from the claim text.