Height Adjustable Toilet Flush Tank Drain Fitting
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Solution Overview
Problem
Existing height-adjustable drain fittings for flushing tanks are cost-intensive and require excessive space due to complex mechanical constructions, which can lead to malfunctions and increased dimensions.
Innovation Solution
A compact height-adjustable drain fitting design featuring a drain valve housing with an actuating rod that extends outwards, allowing for height adjustment through a mounting element with a receptacle, ensuring secure actuation and reduced susceptibility to defects, utilizing a locking mechanism for precise height adjustment and engagement with the actuating unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a complex mechanical construction is used for height adjustment, then the height adjustment function is achieved, but the production cost increases and the device becomes more space-consuming
Solution Approach 1:
The drain fitting is divided into modular components: a drain valve housing, a separate mounting element with receptacle, and an actuating rod. This segmentation allows the mounting element to be independently adjusted in height relative to the drain valve housing, providing height adaptability without requiring complex integrated mechanisms. The modular design simplifies production and assembly while maintaining adjustment functionality.
2Ease of operation
If a complex bracket mechanism is used to actuate the flushing valve, then the actuation function is achieved, but the device is susceptible to malfunctions and requires more space
Solution Approach 1:
The actuating member is extracted from the interior of the drain valve housing and positioned in the flushing tank space between the actuating element and actuating unit. This extraction eliminates the need for complex internal bracket mechanisms, reducing the number of moving parts and potential failure points. The actuating member directly connects the actuating element to the actuating unit, providing a simple and reliable actuation path.
3Volume of moving object
If the actuating member is mounted inside the drain valve housing, then the construction is compact, but the functional reliability decreases
Solution Approach 1:
Instead of mounting the actuating member strictly inside the drain valve housing (three-dimensional constraint), the solution utilizes the vertical space dimension in the flushing tank. The mounting element with its receptacle is positioned in the flushing tank space, allowing the actuating member to extend vertically between the actuating element and actuating unit. This dimensional approach maintains compactness while improving accessibility and reliability.
Data Source
AI summary
A height-adjustable drain fitting for a flushing tank comprises a drain valve housing, a valve body that can be lifted along an actuating axis so as to initiate flushing, an actuating unit that acts on the valve body and controls the movement of the valve body, an actuating member which acts on the actuating unit, an actuating element that acts on the actuating member and by element of which the actuating member can be actuated by the user, and a mounting element having a receptacle for mounting the actuating member. The mounting element is displaceable relative to the drain valve housing and is connected thereto for adjusting the height. The actuating member has the shape of an actuating rod and is designed so as to be height-adjustable.