Mechanical Air Pump Pressure Valve for Automatic Inflation Control
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Solution Overview
Problem
Existing inflatable product pumps rely on manual control, which is inaccurate, or use pressure sensors and solenoid valves, which are costly and complex.
Innovation Solution
An air pump with a pressure valve assembly that automatically controls inflation and deflation based on internal pressure, using a swing rod and pressure rod mechanism to lock and unlock a switch assembly, allowing for precise operation without complex structures or high costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If pressure sensors and solenoid valves are used to achieve automatic control, then measurement precision and automation are improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent replaces electronic pressure sensors and solenoid valves with a purely mechanical pressure sensing system. The diaphragm, pressure rod, and swing rod form a mechanical transmission mechanism that directly converts pressure changes into mechanical motion to control the valve, eliminating the need for electronic components while achieving automatic pressure-based control.
Solution Approach 2:
The mechanical pressure sensing system is self-actuating and requires no external power source or control system. The pressure differential automatically moves the diaphragm and pressure rod, which in turn automatically actuates the swing rod to open or close the valve, creating a self-regulating system that serves itself without external intervention.
2Extent of automation
If pressure sensors and solenoid valves are used to achieve automatic control, then automation is improved, but manufacturing cost increases
Solution Approach 1:
The patent employs simple, inexpensive mechanical components such as a flexible diaphragm, a sliding pressure rod, and a pivotable swing rod that can be manufactured at low cost using conventional machining processes. These components are replaced more easily and cheaply compared to electronic sensors and solenoid valves, reducing both initial manufacturing cost and long-term maintenance expenses.
Solution Approach 2:
By substituting expensive electronic components with simple mechanical elements, the patent dramatically reduces manufacturing cost while preserving automatic control functionality. The mechanical system uses basic components like diaphragms, rods, and pivots that are inexpensive to produce and assemble.
3Device complexity
If manual control is used to stop pump operation, then device complexity is reduced, but measurement precision and control accuracy deteriorate
Solution Approach 1:
The system automatically senses pressure through the diaphragm and pressure rod mechanism and self-regulates by opening or closing the valve based on pressure differential, eliminating the need for manual intervention while maintaining simple device structure. The system serves itself by using the pressure differential to directly actuate the control mechanism.
Solution Approach 2:
The patent replaces manual control operations with an automatic mechanical sensing and actuation system. The diaphragm senses pressure changes and the pressure rod transmits this information to the swing rod, which automatically opens or closes the valve, replacing human judgment and manual valve operation with a simple mechanical reflex system.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The air pump accurately controls inflation and deflation based on internal pressure, providing low-cost and precise operation.
Implementation Method 1
a pressure spring disposed in the valve chamber and sleeved on the pressure rod
Implementation Method 2
an air pump assembly operatively coupled to the switch assembly and comprising a pump motor
Data Source
AI summary
An air pump for an inflatable product may include a pressure valve assembly and an inflation-and-deflation control assembly. The inflation-and-deflation control assembly may include a switch assembly operatively coupled to the pressure valve assembly and a pump assembly operatively coupled to the switch assembly. The switch assembly may have a first position and a second position, and the pressure valve assembly may be configured to engage the switch assembly to maintain the switch assembly in the first position or the second position. When the pressure valve assembly detects that a pressure threshold has been reached within the inflatable product, the pressure valve assembly may disengage from the switch assembly.