Flush Water Supply Float Position Adjuster Dust Clearance
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Solution Overview
Problem
The flush water supply apparatus faces operational issues due to small-sized dust passing through filters, which can accumulate and render the float-position adjusting member immovable, preventing normal operation.
Innovation Solution
Incorporating a 'play' of 10 degrees or more in the relative rotation between the float-position adjusting member and the small-tank-position adjusting member, allowing small-sized dust to pass through and preventing accumulation, while maintaining ease of operation by limiting the rotational angle to less than 120 degrees.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a filter is installed in the water supply pipe to remove dust, then large-sized dust is prevented from entering the flush water tank, but small-sized dust still passes through and accumulates in the corotation structure, causing operational failure
Solution Approach 1:
The patent extracts the harmful small-sized dust from the water supply system by introducing a dedicated dust discharge path. The corotation structure is designed with a dust discharge hole that allows accumulated dust to be expelled from the apparatus, separating the dust removal function from the main water supply function.
Solution Approach 2:
The patent introduces an intermediary mechanism - the dust discharge hole and associated dust discharge structure - that mediates between the water supply system and the external environment. This intermediary allows dust to be removed without affecting the normal water supply operation.
2Manufacturing precision
If the float-position adjusting member and small-tank-position adjusting member are rigidly connected to ensure precise position control, then adjustment precision is improved, but dust accumulation in the connection gap causes the float-position adjusting member to become immovable
Solution Approach 1:
The patent applies dynamics by making the connection between the float-position adjusting member and small-tank-position adjusting member non-rigid. The dust discharge hole creates a dynamic gap that allows for thermal expansion, manufacturing tolerances, and dust removal, while still maintaining sufficient positioning accuracy for normal operation.
3Volume of moving object
If the diameter of the rotatable shaft member is reduced to minimize space occupation, then device compactness is improved, but direct operation becomes difficult due to the small diameter
Solution Approach 1:
The patent merges the rotation operation of two adjusting members. When the float-position adjusting member is rotated, it causes the small-tank-position adjusting member to rotate simultaneously through the corotation connection. This allows the user to operate one member to achieve adjustment of both members, compensating for the small diameter of the rotatable shaft member.
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
This design significantly reduces the likelihood of small-sized dust causing operational failures by creating a passage for dust to pass through, ensuring the apparatus functions normally even if dust accumulates, and facilitates easy adjustment of relative positions.
Implementation Method 1
a float 142 provided in the small tank 138. The float 142 is slidable against the small tank 138 in a vertical direction in conjunction with a change of a flush water level in the small tank 138
Data Source
AI summary
A float-position adjusting member is circumferentially rotatable around an axis thereof so that a relative position between an arm and a float is adjustable. A small-tank-position adjusting member is also circumferentially rotatable around an axis thereof so that a vertical position to which a small tank is supported is adjustable. These adjusting members are coaxially arranged. When the float-position adjusting member is rotated in one direction, a first contact part of the float-position adjusting member comes in contact with a first contact part of the small-tank-position adjusting member for their corotation. When the small-tank-position adjusting member is rotated in the other direction, second contact parts of the adjusting members come in contact with each other for their corotation. There is no corotation between the contact state of the first contact parts and the contact state of the second contact parts, whose rotational angle is 10 degrees or more.