Linked Water Path Valve Structure for No-Pressure Toilet Lid Control

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Solution Overview

Problem

Existing intelligent toilet lid systems face issues with high costs, short maintenance periods, and water pressure control problems due to the use of electromagnetic valves, while mechanical pressure stabilizing valves can cause excessive water pressure when damaged, leading to system failures.

Innovation Solution

A water path control valve structure comprising an upper directional-control valve and a lower mechanical on-off valve, integrated into a single valve structure with a linkage valve core and sealing components, ensuring no water pressure in the unused state and extending the product's service life.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If electromagnetic valve is used to control inlet water, then the toilet lid system can automatically control water flow, but the product cost increases and maintenance period shortens

Engineering Contradiction:

Improveautomatic water flow controlVSAvoidmaintenance period

Core Design Contradiction:

Extent of automationVSReliability

Solution Approach 1:

The patent replaces the electromagnetic valve with a mechanical pressure stabilizing valve that uses water pressure itself to control the water flow. The valve core is driven by pressure differential rather than electrical actuation, eliminating the need for power supply and electromagnetic components while achieving automatic water flow control through mechanical pressure regulation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The pressure stabilizing valve uses the water pressure from the inlet itself to drive the valve core and control the water flow. The system serves itself by using its own operating parameter (water pressure) to regulate its own operation, eliminating the need for external power supply and control systems.

Inventive Principle:

Principle #25Self-service

2Extent of automation

If electromagnetic valve is used to control inlet water, then the toilet lid system can automatically control water flow, but the product manufacturing cost increases

Engineering Contradiction:

Improveautomatic water flow controlVSAvoidmanufacturing cost

Core Design Contradiction:

Extent of automationVSEase of manufacture

Solution Approach 1:

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The mechanical pressure stabilizing valve uses simple mechanical components that are cheaper to manufacture than electromagnetic valves. The valve core, spring, and sealing elements are standard mechanical parts that can be produced at lower cost, making the overall product more affordable despite potentially shorter component lifespan.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

3Ease of manufacture

If mechanical pressure stabilizing valve is used to control inlet water, then the product cost decreases, but the system cannot maintain no water pressure state and reliability decreases

Engineering Contradiction:

Improveproduct costVSAvoidwater pressure control

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent applies different valve types at different locations in the water system. The mechanical pressure stabilizing valve is used at the inlet to reduce cost, while electromagnetic directional control valves are used at the outlets where precise directional control is needed. This localized application of different valve qualities optimizes both cost and reliability for each specific function.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The water control system is segmented into two functional parts: inlet water pressure regulation (mechanical valve for cost reduction) and outlet water directional control (electromagnetic valves for precise control). This segmentation allows each part to use the most appropriate valve type for its specific function, balancing cost and reliability.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS11143320B2Water path control valve structure for flushing toilet lid

Publication Date: 2021.10.12 XIAMEN R&J PRECISION TECH CO LTD

AI summary

A water path control valve structure for flushing the toilet lid, which is divided into upper and lower valve parts, including a valve body, a linkage valve core and a sealing component. The sealing component is installed on the linkage valve core, and the linkage valve core is arranged in the hollow valve body and one end of the linkage valve core extends out of the valve body. The linkage valve core includes an upper valve core and a lower valve core arranged coaxially, and one end of the upper valve core extends out of the valve body. The upper and lower valve cores are respectively installed with the sealing member.