Thin Liquid Surface Detector Holder Design
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Solution Overview
Problem
Conventional liquid surface detecting apparatuses are thick due to the structure of fixing the arm to the holder, which affects the rotation axis direction, leading to increased thickness.
Innovation Solution
The arm is fixed outside the magnet on the holder, with cross-sectional parts positioned between the upper and lower ends of the rotation axis, utilizing first and second mounting sections to securely attach the arm, allowing for a thinner holder design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the arm is fixed by inserting an end part of the arm in a rotation axis direction of the holder, then the arm can be securely attached to the holder, but the holder becomes thick in the rotation axis direction
Solution Approach 1:
The arm is fixed to the holder in a direction perpendicular to the rotation axis direction, specifically with the arm's longitudinal direction extending radially outward from the rotation axis. This dimensional change in attachment orientation allows the arm to be securely fixed without increasing the holder's thickness in the rotation axis direction, thus resolving the contradiction between attachment strength and holder thickness.
2Length of stationary object
If the arm is fixed outside the magnet of the holder, then the holder thickness is reduced, but the structural stability may be compromised
Solution Approach 1:
The holder is designed with localized mounting sections specifically positioned outside the magnet area, where the arm can be attached perpendicular to the rotation axis. This local quality approach allows the arm to be securely mounted in a specific region without interfering with the magnet's function or requiring increased overall holder thickness, thus maintaining structural stability while reducing thickness.
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 configuration results in a thinner liquid surface detecting apparatus without compromising the detection accuracy, as the arm's cross-section is fixed perpendicular to the magnet's rotation axis, reducing the holder's thickness effectively.
Implementation Method 1
a magnetic detecting element, which is positioned at a rotation center portion of the holder, and is fixed to the main body section such that the magnetic detecting element intersects a magnetic flux of the magnet, and which detects a magnetic change generated with displacement of the magnet and converts the change into electrical signals
Data Source
AI summary
Provided is a thin liquid surface detecting apparatus wherein a thickness of a holder is suppressed. A liquid surface detecting apparatus is provided with: a holder rotatably held to a main body section; a magnet fixed to the holder; an arm, which connects the holder and a float floating on the liquid surface of a liquid, and which converts an up-and-down motion of the float into a rotation motion of the holder; and a magnetic detecting element, which is positioned at a rotation center portion of the holder, and is fixed to the main body section such that the magnetic detecting element intersects a magnetic flux of the magnet, and which detects a magnetic change generated with displacement of the magnet and converts the change into electrical signals. The liquid surface detecting apparatus detects the liquid surface on the basis of the electrical signals transmitted from the magnetic detecting element. The arm is fixed to the outside of the magnet of the holder, and a part of a cross-section in the direction perpendicular to the longitudinal direction of the arm fixed to the holder is positioned between an upper end and a lower end in the rotation axis direction of the magnet.