Integrated pump valve module

Abstract

The invention discloses an integrated pump valve module. The integrated pump valve module comprises a booster pump, an air vent valve, an air outlet and an upper cover. The air outlet and the air vent valve are arranged on the upper cover. An airflow channel is formed in the upper cover and communicated with the booster pump, the air vent valve and the air outlet. The air vent valve is a solenoid valve. The bottom of the upper cover is provided with a plurality of annular grooves. The annular grooves are open downwards. The inner side faces of the annular grooves are in close fit with the upper ends of pistons in the booster pump. The opposite sides of the annular grooves are directly communicated with an opening in the top end of the upper cover at the bottom ends of the grooves. The opening is located below the air vent valve. The bottom end of the side, away from the other annular grooves, of one annular groove is directly communicated with the air outlet, so that the airflow channel is formed in the upper cover. The integrated pump valve module has the advantages that the structure is intensive, the size is small, parts are reasonable in design, the manufacturing cost is low, and can be applied to the fields such as sphygmomanometers and massage devices.

Description

technical field [0001] The invention relates to a pump valve used in a sphygmomanometer, a massage instrument, etc., and in particular to a compact and component-intensive integrated pump valve module. Background technique [0002] One of the important parts of electronic sphygmomanometers currently on the market is an assembly composed of a pressure air pump, a quick release valve, and a slow release valve. They need to be connected by complicated rubber hoses, three-way or four-way joints , larger in size. When assembling the above components, the hose needs to be bent to a specified angle. If the assembly operator is not careful and the bend is too large, it will cause the hose to be closed and affect the performance of the electronic sphygmomanometer, and it will cost more to assemble the above components. Many working hours and high labor intensity. [0003] Chinese patent document CN103767695A (publication date: 2014.05.07) discloses an integrated air pump. A purely ...

AI Technical Summary

Problems solved by technology

Although the integrated air pump can solve the technical problem of complex structure and large volume of components composed of the pressure air pump and the quick release valve in the prior art, it lacks the slow release valve, so it is only suitable for the upper air measurement method; the measurement process requires The integrated air pump is always pressurized, which causes the air flow in the cuff to be unstable during the measurement process, making it difficult to guarantee the accuracy of the measurement data; the frequent deformation of the elastic body in the air release valve can easily lead to its hardening and shorten its life, and there is a seal Difficult to guarantee sex and reliability

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