Wall-Mounted Faucet Control Structure for Leak Prevention
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Solution Overview
Problem
Conventional faucet structures fail to completely auto-switch due to residual water pressure and are prone to unexpected water leakage, as the sealing element can be affected by the valve opening edge and water flow, leading to gaps and leaks.
Innovation Solution
A control structure for a wall-mounted faucet featuring a resilient unit that pushes a control stick to drive the valve block, with a sealing unit having a slanting edge that deforms to seal gaps and a recessed opening to enhance sealing, and both ends of the resilient unit are positioned against the water outlet and valve block surfaces to prevent unexpected water spraying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the valve piece is allowed to switch automatically when water supply is off, then the auto-switching function is achieved, but residual water pressure prevents complete switching and causes unexpected water leakage
Solution Approach 1:
The resilient unit is pre-loaded to store elastic potential energy during water flow, and this stored energy is released automatically when water supply stops, ensuring the valve piece completes its switching action despite residual pressure. The control stick is also positioned in advance to facilitate the switching motion.
Solution Approach 2:
The resilient unit acts as an intermediary between the water pressure system and the valve piece, converting residual water pressure into useful switching motion through elastic deformation. The control stick serves as another intermediary that transmits and amplifies this motion to ensure complete valve closure.
2Reliability
If the sealing element is designed to engage with the valve opening edge, then sealing is achieved, but the valve opening edge affects the sealing element to increase the gap and cause water leakage
Solution Approach 1:
The sealing element features a slanting edge at its leading end, creating a localized geometric feature that actively engages with the valve opening edge. This local modification transforms the harmful edge contact into a beneficial sealing mechanism, where the slanting geometry guides the sealing element into proper engagement while preventing gap formation.
Solution Approach 2:
The slanting edge creates a curved or angled surface profile on the sealing element that complements the valve opening edge geometry. This curved engagement surface allows the sealing element to conform to the valve opening edge, distributing contact pressure and preventing the formation of leakage gaps.
3Productivity
If the recessed cut is held open by water flow through the connecting hole, then water flow is maintained, but the attaching end is pushed and lifted by water flow to leak from the gap
Solution Approach 1:
The recessed opening is designed to dynamically respond to water pressure, opening during water flow to maintain productivity and closing during no-flow conditions to ensure sealing reliability. The slanting edge geometry enables this dynamic behavior by allowing water pressure to hold the opening open during flow while permitting elastic recovery to close it when flow stops.
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 solution ensures complete auto-switching and immediate water stopping by sealing the gap between the sealing unit and the valve block, preventing leaks and ensuring water is not sprayed unexpectedly when the faucet is reused.
Implementation Method 1
both ends of the resilient unit are against the stopping surface of the water outlet and the connecting surface of the valve block to obtain an improved control structure of the wall-mounted faucet
Implementation Method 2
when the sealing unit is compressed by the edge of the valve, the slanting edge is deformed to block an inner portion of the positioning slot
Implementation Method 3
when the water supply is off, the valve piece is affected by residual water pressure inside the water outlet head
Data Source
AI summary
A control structure of a wall-mounted faucet includes a water outlet and a control device, wherein the control device has a control stick, a valve block, a sealing unit and a resilient unit, wherein the control stick is disposed through a through hole of the water outlet, and the valve block has two clamping ribs protrudingly located at front side of the valve block, and the clamping ribs clamp the control stick. A connecting surface is located on top of the clamping ribs, and the resilient unit covers the control stick, wherein both ends of the resilient unit are against the stopping surface of the water outlet and the connecting surface of the valve block. So, the control stick is pushed by the resilient unit to drive the valve block to escape the valve of the water outlet to avoid the water unexpectedly spraying out from the showerhead.